diff --git a/api/core/repositories/sqlalchemy_workflow_execution_repository.py b/api/core/repositories/sqlalchemy_workflow_execution_repository.py
index e5ead9dc5..e30538742 100644
--- a/api/core/repositories/sqlalchemy_workflow_execution_repository.py
+++ b/api/core/repositories/sqlalchemy_workflow_execution_repository.py
@@ -6,7 +6,7 @@ import json
 import logging
 from typing import Optional, Union
 
-from sqlalchemy import func, select
+from sqlalchemy import select
 from sqlalchemy.engine import Engine
 from sqlalchemy.orm import sessionmaker
 
@@ -146,20 +146,7 @@ class SQLAlchemyWorkflowExecutionRepository(WorkflowExecutionRepository):
         db_model.workflow_id = domain_model.workflow_id
         db_model.triggered_from = self._triggered_from
 
-        # Check if this is a new record
-        with self._session_factory() as session:
-            existing = session.scalar(select(WorkflowRun).where(WorkflowRun.id == domain_model.id_))
-            if not existing:
-                # For new records, get the next sequence number
-                stmt = select(func.max(WorkflowRun.sequence_number)).where(
-                    WorkflowRun.app_id == self._app_id,
-                    WorkflowRun.tenant_id == self._tenant_id,
-                )
-                max_sequence = session.scalar(stmt)
-                db_model.sequence_number = (max_sequence or 0) + 1
-            else:
-                # For updates, keep the existing sequence number
-                db_model.sequence_number = existing.sequence_number
+        # No sequence number generation needed anymore
 
         db_model.type = domain_model.workflow_type
         db_model.version = domain_model.workflow_version
diff --git a/api/fields/workflow_run_fields.py b/api/fields/workflow_run_fields.py
index 74fdf8bd9..a106728e9 100644
--- a/api/fields/workflow_run_fields.py
+++ b/api/fields/workflow_run_fields.py
@@ -19,7 +19,6 @@ workflow_run_for_log_fields = {
 
 workflow_run_for_list_fields = {
     "id": fields.String,
-    "sequence_number": fields.Integer,
     "version": fields.String,
     "status": fields.String,
     "elapsed_time": fields.Float,
@@ -36,7 +35,6 @@ advanced_chat_workflow_run_for_list_fields = {
     "id": fields.String,
     "conversation_id": fields.String,
     "message_id": fields.String,
-    "sequence_number": fields.Integer,
     "version": fields.String,
     "status": fields.String,
     "elapsed_time": fields.Float,
@@ -63,7 +61,6 @@ workflow_run_pagination_fields = {
 
 workflow_run_detail_fields = {
     "id": fields.String,
-    "sequence_number": fields.Integer,
     "version": fields.String,
     "graph": fields.Raw(attribute="graph_dict"),
     "inputs": fields.Raw(attribute="inputs_dict"),
diff --git a/api/migrations/versions/2025_06_19_1633-0ab65e1cc7fa_remove_sequence_number_from_workflow_.py b/api/migrations/versions/2025_06_19_1633-0ab65e1cc7fa_remove_sequence_number_from_workflow_.py
new file mode 100644
index 000000000..29fef7779
--- /dev/null
+++ b/api/migrations/versions/2025_06_19_1633-0ab65e1cc7fa_remove_sequence_number_from_workflow_.py
@@ -0,0 +1,66 @@
+"""remove sequence_number from workflow_runs
+
+Revision ID: 0ab65e1cc7fa
+Revises: 4474872b0ee6
+Create Date: 2025-06-19 16:33:13.377215
+
+"""
+from alembic import op
+import models as models
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '0ab65e1cc7fa'
+down_revision = '4474872b0ee6'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('workflow_runs', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('workflow_run_tenant_app_sequence_idx'))
+        batch_op.drop_column('sequence_number')
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+
+    # WARNING: This downgrade CANNOT recover the original sequence_number values!
+    # The original sequence numbers are permanently lost after the upgrade.
+    # This downgrade will regenerate sequence numbers based on created_at order,
+    # which may result in different values than the original sequence numbers.
+    #
+    # If you need to preserve original sequence numbers, use the alternative
+    # migration approach that creates a backup table before removal.
+
+    # Step 1: Add sequence_number column as nullable first
+    with op.batch_alter_table('workflow_runs', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('sequence_number', sa.INTEGER(), autoincrement=False, nullable=True))
+
+    # Step 2: Populate sequence_number values based on created_at order within each app
+    # NOTE: This recreates sequence numbering logic but values will be different
+    # from the original sequence numbers that were removed in the upgrade
+    connection = op.get_bind()
+    connection.execute(sa.text("""
+        UPDATE workflow_runs
+        SET sequence_number = subquery.row_num
+        FROM (
+            SELECT id, ROW_NUMBER() OVER (
+                PARTITION BY tenant_id, app_id
+                ORDER BY created_at, id
+            ) as row_num
+            FROM workflow_runs
+        ) subquery
+        WHERE workflow_runs.id = subquery.id
+    """))
+
+    # Step 3: Make the column NOT NULL and add the index
+    with op.batch_alter_table('workflow_runs', schema=None) as batch_op:
+        batch_op.alter_column('sequence_number', nullable=False)
+        batch_op.create_index(batch_op.f('workflow_run_tenant_app_sequence_idx'), ['tenant_id', 'app_id', 'sequence_number'], unique=False)
+
+    # ### end Alembic commands ###
diff --git a/api/models/workflow.py b/api/models/workflow.py
index 2fff04554..1733dec0f 100644
--- a/api/models/workflow.py
+++ b/api/models/workflow.py
@@ -386,7 +386,7 @@ class WorkflowRun(Base):
     - id (uuid) Run ID
     - tenant_id (uuid) Workspace ID
     - app_id (uuid) App ID
-    - sequence_number (int) Auto-increment sequence number, incremented within the App, starting from 1
+
     - workflow_id (uuid) Workflow ID
     - type (string) Workflow type
     - triggered_from (string) Trigger source
@@ -419,13 +419,12 @@ class WorkflowRun(Base):
     __table_args__ = (
         db.PrimaryKeyConstraint("id", name="workflow_run_pkey"),
         db.Index("workflow_run_triggerd_from_idx", "tenant_id", "app_id", "triggered_from"),
-        db.Index("workflow_run_tenant_app_sequence_idx", "tenant_id", "app_id", "sequence_number"),
     )
 
     id: Mapped[str] = mapped_column(StringUUID, server_default=db.text("uuid_generate_v4()"))
     tenant_id: Mapped[str] = mapped_column(StringUUID)
     app_id: Mapped[str] = mapped_column(StringUUID)
-    sequence_number: Mapped[int] = mapped_column()
+
     workflow_id: Mapped[str] = mapped_column(StringUUID)
     type: Mapped[str] = mapped_column(db.String(255))
     triggered_from: Mapped[str] = mapped_column(db.String(255))
@@ -485,7 +484,6 @@ class WorkflowRun(Base):
             "id": self.id,
             "tenant_id": self.tenant_id,
             "app_id": self.app_id,
-            "sequence_number": self.sequence_number,
             "workflow_id": self.workflow_id,
             "type": self.type,
             "triggered_from": self.triggered_from,
@@ -511,7 +509,6 @@ class WorkflowRun(Base):
             id=data.get("id"),
             tenant_id=data.get("tenant_id"),
             app_id=data.get("app_id"),
-            sequence_number=data.get("sequence_number"),
             workflow_id=data.get("workflow_id"),
             type=data.get("type"),
             triggered_from=data.get("triggered_from"),
diff --git a/api/tests/unit_tests/core/workflow/test_workflow_cycle_manager.py b/api/tests/unit_tests/core/workflow/test_workflow_cycle_manager.py
index fddc18259..646de8bf3 100644
--- a/api/tests/unit_tests/core/workflow/test_workflow_cycle_manager.py
+++ b/api/tests/unit_tests/core/workflow/test_workflow_cycle_manager.py
@@ -163,7 +163,6 @@ def real_workflow_run():
     workflow_run.tenant_id = "test-tenant-id"
     workflow_run.app_id = "test-app-id"
     workflow_run.workflow_id = "test-workflow-id"
-    workflow_run.sequence_number = 1
     workflow_run.type = "chat"
     workflow_run.triggered_from = "app-run"
     workflow_run.version = "1.0"
diff --git a/web/app/components/develop/template/template_advanced_chat.en.mdx b/web/app/components/develop/template/template_advanced_chat.en.mdx
index 2e0242427..faecd3d1c 100644
--- a/web/app/components/develop/template/template_advanced_chat.en.mdx
+++ b/web/app/components/develop/template/template_advanced_chat.en.mdx
@@ -152,7 +152,6 @@ Chat applications support session persistence, allowing previous chat history to
       - `data` (object) detail
         - `id` (string) Unique ID of workflow execution
         - `workflow_id` (string) ID of related workflow
-        - `sequence_number` (int) Self-increasing serial number, self-increasing in the App, starting from 1
         - `created_at` (timestamp) Creation timestamp, e.g., 1705395332
     - `event: node_started` node execution started
       - `task_id` (string) Task ID, used for request tracking and the below Stop Generate API
@@ -287,7 +286,7 @@ Chat applications support session persistence, allowing previous chat history to
     ### Streaming Mode
     <CodeGroup title="Response">
     ```streaming {{ title: 'Response' }}
-      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "sequence_number": 1, "created_at": 1679586595}}
+      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "created_at": 1679586595}}
       data: {"event": "node_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "created_at": 1679586595}}
       data: {"event": "node_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "execution_metadata": {"total_tokens": 63127864, "total_price": 2.378, "currency": "USD"},  "created_at": 1679586595}}
       data: {"event": "workflow_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "total_tokens": 63127864, "total_steps": "1", "created_at": 1679586595, "finished_at": 1679976595}}
diff --git a/web/app/components/develop/template/template_advanced_chat.ja.mdx b/web/app/components/develop/template/template_advanced_chat.ja.mdx
index 535de3aa0..5ce54a61d 100644
--- a/web/app/components/develop/template/template_advanced_chat.ja.mdx
+++ b/web/app/components/develop/template/template_advanced_chat.ja.mdx
@@ -152,7 +152,6 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
       - `data` (object) 詳細
         - `id` (string) ワークフロー実行の一意ID
         - `workflow_id` (string) 関連ワークフローのID
-        - `sequence_number` (int) 自己増加シリアル番号、アプリ内で自己増加し、1から始まります
         - `created_at` (timestamp) 作成タイムスタンプ、例：1705395332
     - `event: node_started` ノード実行が開始
       - `task_id` (string) タスクID、リクエスト追跡と以下のStop Generate APIに使用
@@ -287,7 +286,7 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
     ### ストリーミングモード
     <CodeGroup title="応答">
     ```streaming {{ title: '応答' }}
-      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "sequence_number": 1, "created_at": 1679586595}}
+      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "created_at": 1679586595}}
       data: {"event": "node_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "created_at": 1679586595}}
       data: {"event": "node_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "execution_metadata": {"total_tokens": 63127864, "total_price": 2.378, "currency": "USD"},  "created_at": 1679586595}}
       data: {"event": "workflow_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "total_tokens": 63127864, "total_steps": "1", "created_at": 1679586595, "finished_at": 1679976595}}
diff --git a/web/app/components/develop/template/template_advanced_chat.zh.mdx b/web/app/components/develop/template/template_advanced_chat.zh.mdx
index fa3ad3f37..7a69ee60a 100755
--- a/web/app/components/develop/template/template_advanced_chat.zh.mdx
+++ b/web/app/components/develop/template/template_advanced_chat.zh.mdx
@@ -153,7 +153,6 @@ import { Row, Col, Properties, Property, Heading, SubProperty } from '../md.tsx'
       - `data` (object) 详细内容
         - `id` (string) workflow 执行 ID
         - `workflow_id` (string) 关联 Workflow ID
-        - `sequence_number` (int) 自增序号，App 内自增，从 1 开始
         - `created_at` (timestamp) 开始时间
     - `event: node_started` node 开始执行
       - `task_id` (string) 任务 ID，用于请求跟踪和下方的停止响应接口
@@ -297,7 +296,7 @@ import { Row, Col, Properties, Property, Heading, SubProperty } from '../md.tsx'
     ### 流式模式
     <CodeGroup title="Response">
     ```streaming {{ title: 'Response' }}
-      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "sequence_number": 1, "created_at": 1679586595}}
+      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "created_at": 1679586595}}
       data: {"event": "node_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "created_at": 1679586595}}
       data: {"event": "node_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "execution_metadata": {"total_tokens": 63127864, "total_price": 2.378, "currency": "USD"},  "created_at": 1679586595}}
       data: {"event": "workflow_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "total_tokens": 63127864, "total_steps": "1", "created_at": 1679586595, "finished_at": 1679976595}}
diff --git a/web/app/components/develop/template/template_workflow.en.mdx b/web/app/components/develop/template/template_workflow.en.mdx
index 5e4c136ad..756cf2053 100644
--- a/web/app/components/develop/template/template_workflow.en.mdx
+++ b/web/app/components/develop/template/template_workflow.en.mdx
@@ -103,7 +103,6 @@ Workflow applications offers non-session support and is ideal for translation, a
       - `data` (object) detail
         - `id` (string) Unique ID of workflow execution
         - `workflow_id` (string) ID of related workflow
-        - `sequence_number` (int) Self-increasing serial number, self-increasing in the App, starting from 1
         - `created_at` (timestamp) Creation timestamp, e.g., 1705395332
     - `event: node_started` node execution started
       - `task_id` (string) Task ID, used for request tracking and the below Stop Generate API
@@ -241,7 +240,7 @@ Workflow applications offers non-session support and is ideal for translation, a
     ### Streaming Mode
     <CodeGroup title="Response">
     ```streaming {{ title: 'Response' }}
-      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "sequence_number": 1, "created_at": 1679586595}}
+      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "created_at": 1679586595}}
       data: {"event": "node_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "created_at": 1679586595}}
       data: {"event": "node_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "execution_metadata": {"total_tokens": 63127864, "total_price": 2.378, "currency": "USD"},  "created_at": 1679586595}}
       data: {"event": "workflow_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "total_tokens": 63127864, "total_steps": "1", "created_at": 1679586595, "finished_at": 1679976595}}
diff --git a/web/app/components/develop/template/template_workflow.ja.mdx b/web/app/components/develop/template/template_workflow.ja.mdx
index 48fcb1237..e63393cbc 100644
--- a/web/app/components/develop/template/template_workflow.ja.mdx
+++ b/web/app/components/develop/template/template_workflow.ja.mdx
@@ -104,7 +104,6 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
       - `data` (object) 詳細
         - `id` (string) ワークフロー実行の一意の ID
         - `workflow_id` (string) 関連するワークフローの ID
-        - `sequence_number` (int) 自己増加シリアル番号、アプリ内で自己増加し、1 から始まります
         - `created_at` (timestamp) 作成タイムスタンプ、例：1705395332
     - `event: node_started` ノード実行開始
       - `task_id` (string) タスク ID、リクエスト追跡と以下の Stop Generate API に使用
@@ -242,7 +241,7 @@ import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from
     ### ストリーミングモード
     <CodeGroup title="応答">
     ```streaming {{ title: '応答' }}
-      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "sequence_number": 1, "created_at": 1679586595}}
+      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "created_at": 1679586595}}
       data: {"event": "node_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "created_at": 1679586595}}
       data: {"event": "node_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "execution_metadata": {"total_tokens": 63127864, "total_price": 2.378, "currency": "USD"},  "created_at": 1679586595}}
       data: {"event": "workflow_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "total_tokens": 63127864, "total_steps": "1", "created_at": 1679586595, "finished_at": 1679976595}}
diff --git a/web/app/components/develop/template/template_workflow.zh.mdx b/web/app/components/develop/template/template_workflow.zh.mdx
index 4e21d81a9..fc193de5d 100644
--- a/web/app/components/develop/template/template_workflow.zh.mdx
+++ b/web/app/components/develop/template/template_workflow.zh.mdx
@@ -98,7 +98,6 @@ Workflow 应用无会话支持，适合用于翻译/文章写作/总结 AI 等
       - `data` (object) 详细内容
         - `id` (string) workflow 执行 ID
         - `workflow_id` (string) 关联 Workflow ID
-        - `sequence_number` (int) 自增序号，App 内自增，从 1 开始
         - `created_at` (timestamp) 开始时间
     - `event: node_started` node 开始执行
       - `task_id` (string) 任务 ID，用于请求跟踪和下方的停止响应接口
@@ -232,7 +231,7 @@ Workflow 应用无会话支持，适合用于翻译/文章写作/总结 AI 等
     ### Streaming Mode
     <CodeGroup title="Response">
     ```streaming {{ title: 'Response' }}
-      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "sequence_number": 1, "created_at": 1679586595}}
+      data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "created_at": 1679586595}}
       data: {"event": "node_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "created_at": 1679586595}}
       data: {"event": "node_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "execution_metadata": {"total_tokens": 63127864, "total_price": 2.378, "currency": "USD"},  "created_at": 1679586595}}
       data: {"event": "workflow_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "total_tokens": 63127864, "total_steps": "1", "created_at": 1679586595, "finished_at": 1679976595}}
diff --git a/web/app/components/workflow/header/running-title.tsx b/web/app/components/workflow/header/running-title.tsx
index 0460a96c9..95e763ead 100644
--- a/web/app/components/workflow/header/running-title.tsx
+++ b/web/app/components/workflow/header/running-title.tsx
@@ -2,6 +2,7 @@ import { memo } from 'react'
 import { useTranslation } from 'react-i18next'
 import { useIsChatMode } from '../hooks'
 import { useStore } from '../store'
+import { formatWorkflowRunIdentifier } from '../utils'
 import { ClockPlay } from '@/app/components/base/icons/src/vender/line/time'
 
 const RunningTitle = () => {
@@ -12,7 +13,7 @@ const RunningTitle = () => {
   return (
     <div className='flex h-[18px] items-center text-xs text-gray-500'>
       <ClockPlay className='mr-1 h-3 w-3 text-gray-500' />
-      <span>{isChatMode ? `Test Chat#${historyWorkflowData?.sequence_number}` : `Test Run#${historyWorkflowData?.sequence_number}`}</span>
+      <span>{isChatMode ? `Test Chat${formatWorkflowRunIdentifier(historyWorkflowData?.finished_at)}` : `Test Run${formatWorkflowRunIdentifier(historyWorkflowData?.finished_at)}`}</span>
       <span className='mx-1'>·</span>
       <span className='ml-1 flex h-[18px] items-center rounded-[5px] border border-indigo-300 bg-white/[0.48] px-1 text-[10px] font-semibold uppercase text-indigo-600'>
         {t('workflow.common.viewOnly')}
diff --git a/web/app/components/workflow/header/view-history.tsx b/web/app/components/workflow/header/view-history.tsx
index 21b446286..08f952cd1 100644
--- a/web/app/components/workflow/header/view-history.tsx
+++ b/web/app/components/workflow/header/view-history.tsx
@@ -18,6 +18,7 @@ import {
   useWorkflowRun,
 } from '../hooks'
 import { ControlMode, WorkflowRunningStatus } from '../types'
+import { formatWorkflowRunIdentifier } from '../utils'
 import cn from '@/utils/classnames'
 import {
   PortalToFollowElem,
@@ -199,7 +200,7 @@ const ViewHistory = ({
                               item.id === historyWorkflowData?.id && 'text-text-accent',
                             )}
                           >
-                            {`Test ${isChatMode ? 'Chat' : 'Run'} #${item.sequence_number}`}
+                            {`Test ${isChatMode ? 'Chat' : 'Run'}${formatWorkflowRunIdentifier(item.finished_at)}`}
                           </div>
                           <div className='flex items-center text-xs leading-[18px] text-text-tertiary'>
                             {item.created_by_account?.name} · {formatTimeFromNow((item.finished_at || item.created_at) * 1000)}
diff --git a/web/app/components/workflow/panel/chat-record/index.tsx b/web/app/components/workflow/panel/chat-record/index.tsx
index bf8a06118..58022a32a 100644
--- a/web/app/components/workflow/panel/chat-record/index.tsx
+++ b/web/app/components/workflow/panel/chat-record/index.tsx
@@ -10,6 +10,7 @@ import {
   useWorkflowStore,
 } from '../../store'
 import { useWorkflowRun } from '../../hooks'
+import { formatWorkflowRunIdentifier } from '../../utils'
 import UserInput from './user-input'
 import Chat from '@/app/components/base/chat/chat'
 import type { ChatItem, ChatItemInTree } from '@/app/components/base/chat/types'
@@ -99,7 +100,7 @@ const ChatRecord = () => {
       {fetched && (
         <>
           <div className='flex shrink-0 items-center justify-between p-4 pb-1 text-base font-semibold text-text-primary'>
-            {`TEST CHAT#${historyWorkflowData?.sequence_number}`}
+            {`TEST CHAT${formatWorkflowRunIdentifier(historyWorkflowData?.finished_at)}`}
             <div
               className='flex h-6 w-6 cursor-pointer items-center justify-center'
               onClick={() => {
diff --git a/web/app/components/workflow/panel/record.tsx b/web/app/components/workflow/panel/record.tsx
index 70fe9c44e..534bc633a 100644
--- a/web/app/components/workflow/panel/record.tsx
+++ b/web/app/components/workflow/panel/record.tsx
@@ -3,6 +3,7 @@ import type { WorkflowDataUpdater } from '../types'
 import Run from '../run'
 import { useStore } from '../store'
 import { useWorkflowUpdate } from '../hooks'
+import { formatWorkflowRunIdentifier } from '../utils'
 
 const Record = () => {
   const historyWorkflowData = useStore(s => s.historyWorkflowData)
@@ -20,7 +21,7 @@ const Record = () => {
   return (
     <div className='flex h-full w-[400px] flex-col rounded-l-2xl border-[0.5px] border-components-panel-border bg-components-panel-bg shadow-xl'>
       <div className='system-xl-semibold flex items-center justify-between p-4 pb-0 text-text-primary'>
-        {`Test Run#${historyWorkflowData?.sequence_number}`}
+        {`Test Run${formatWorkflowRunIdentifier(historyWorkflowData?.finished_at)}`}
       </div>
       <Run
         runID={historyWorkflowData?.id || ''}
diff --git a/web/app/components/workflow/panel/workflow-preview.tsx b/web/app/components/workflow/panel/workflow-preview.tsx
index 34b0ec639..af66a414f 100644
--- a/web/app/components/workflow/panel/workflow-preview.tsx
+++ b/web/app/components/workflow/panel/workflow-preview.tsx
@@ -20,6 +20,7 @@ import { useStore } from '../store'
 import {
   WorkflowRunningStatus,
 } from '../types'
+import { formatWorkflowRunIdentifier } from '../utils'
 import Toast from '../../base/toast'
 import InputsPanel from './inputs-panel'
 import cn from '@/utils/classnames'
@@ -88,7 +89,7 @@ const WorkflowPreview = () => {
         onMouseDown={startResizing}
       />
       <div className='flex items-center justify-between p-4 pb-1 text-base font-semibold text-text-primary'>
-        {`Test Run${!workflowRunningData?.result.sequence_number ? '' : `#${workflowRunningData?.result.sequence_number}`}`}
+        {`Test Run${formatWorkflowRunIdentifier(workflowRunningData?.result.finished_at)}`}
         <div className='cursor-pointer p-1' onClick={() => handleCancelDebugAndPreviewPanel()}>
           <RiCloseLine className='h-4 w-4 text-text-tertiary' />
         </div>
diff --git a/web/app/components/workflow/types.ts b/web/app/components/workflow/types.ts
index 2a0a10629..6094f467c 100644
--- a/web/app/components/workflow/types.ts
+++ b/web/app/components/workflow/types.ts
@@ -360,7 +360,6 @@ export type WorkflowRunningData = {
   message_id?: string
   conversation_id?: string
   result: {
-    sequence_number?: number
     workflow_id?: string
     inputs?: string
     process_data?: string
@@ -383,9 +382,9 @@ export type WorkflowRunningData = {
 
 export type HistoryWorkflowData = {
   id: string
-  sequence_number: number
   status: string
   conversation_id?: string
+  finished_at?: number
 }
 
 export enum ChangeType {
diff --git a/web/app/components/workflow/utils/common.ts b/web/app/components/workflow/utils/common.ts
index 8a8afbb26..845216195 100644
--- a/web/app/components/workflow/utils/common.ts
+++ b/web/app/components/workflow/utils/common.ts
@@ -33,3 +33,22 @@ export const isEventTargetInputArea = (target: HTMLElement) => {
   if (target.contentEditable === 'true')
     return true
 }
+
+/**
+ * Format workflow run identifier using finished_at timestamp
+ * @param finishedAt - Unix timestamp in seconds
+ * @param fallbackText - Text to show when finishedAt is not available (default: 'Running')
+ * @returns Formatted string like " (14:30:25)" or " (Running)"
+ */
+export const formatWorkflowRunIdentifier = (finishedAt?: number, fallbackText = 'Running'): string => {
+  if (!finishedAt)
+    return ` (${fallbackText})`
+
+  const date = new Date(finishedAt * 1000)
+  const timeStr = date.toLocaleTimeString([], {
+    hour: '2-digit',
+    minute: '2-digit',
+    second: '2-digit',
+  })
+  return ` (${timeStr})`
+}
diff --git a/web/models/log.ts b/web/models/log.ts
index 9886fe215..31bcaa727 100644
--- a/web/models/log.ts
+++ b/web/models/log.ts
@@ -278,7 +278,6 @@ export type WorkflowLogsRequest = {
 
 export type WorkflowRunDetailResponse = {
   id: string
-  sequence_number: number
   version: string
   graph: {
     nodes: Node[]
diff --git a/web/types/workflow.ts b/web/types/workflow.ts
index bd7334a26..a615c2399 100644
--- a/web/types/workflow.ts
+++ b/web/types/workflow.ts
@@ -152,7 +152,6 @@ export type WorkflowStartedResponse = {
   data: {
     id: string
     workflow_id: string
-    sequence_number: number
     created_at: number
   }
 }
@@ -289,7 +288,6 @@ export type AgentLogResponse = {
 
 export type WorkflowRunHistory = {
   id: string
-  sequence_number: number
   version: string
   conversation_id?: string
   message_id?: string