diff --git a/api/core/workflow/nodes/code/code_node.py b/api/core/workflow/nodes/code/code_node.py
index 22ed9e265..1adabf724 100644
--- a/api/core/workflow/nodes/code/code_node.py
+++ b/api/core/workflow/nodes/code/code_node.py
@@ -1,4 +1,5 @@
 from collections.abc import Mapping, Sequence
+from decimal import Decimal
 from typing import Any, Optional
 
 from configs import dify_config
@@ -114,8 +115,10 @@ class CodeNode(BaseNode[CodeNodeData]):
             )
 
         if isinstance(value, float):
+            decimal_value = Decimal(str(value)).normalize()
+            precision = -decimal_value.as_tuple().exponent if decimal_value.as_tuple().exponent < 0 else 0  # type: ignore[operator]
             # raise error if precision is too high
-            if len(str(value).split(".")[1]) > dify_config.CODE_MAX_PRECISION:
+            if precision > dify_config.CODE_MAX_PRECISION:
                 raise OutputValidationError(
                     f"Output variable `{variable}` has too high precision,"
                     f" it must be less than {dify_config.CODE_MAX_PRECISION} digits."
diff --git a/api/tests/integration_tests/workflow/nodes/test_code.py b/api/tests/integration_tests/workflow/nodes/test_code.py
index 90bb04f64..daab97477 100644
--- a/api/tests/integration_tests/workflow/nodes/test_code.py
+++ b/api/tests/integration_tests/workflow/nodes/test_code.py
@@ -354,3 +354,35 @@ def test_execute_code_output_object_list():
     # validate
     with pytest.raises(ValueError):
         node._transform_result(result, node.node_data.outputs)
+
+
+def test_execute_code_scientific_notation():
+    code = """
+    def main() -> dict:
+        return {
+            "result": -8.0E-5
+        }
+    """
+    code = "\n".join([line[4:] for line in code.split("\n")])
+
+    code_config = {
+        "id": "code",
+        "data": {
+            "outputs": {
+                "result": {
+                    "type": "number",
+                },
+            },
+            "title": "123",
+            "variables": [],
+            "answer": "123",
+            "code_language": "python3",
+            "code": code,
+        },
+    }
+
+    node = init_code_node(code_config)
+    # execute node
+    result = node._run()
+    assert isinstance(result, NodeRunResult)
+    assert result.status == WorkflowNodeExecutionStatus.SUCCEEDED