diff --git a/api/.env.example b/api/.env.example
index 64fe20aa27..b1ac15d25b 100644
--- a/api/.env.example
+++ b/api/.env.example
@@ -527,7 +527,7 @@ API_WORKFLOW_NODE_EXECUTION_REPOSITORY=repositories.sqlalchemy_api_workflow_node
 API_WORKFLOW_RUN_REPOSITORY=repositories.sqlalchemy_api_workflow_run_repository.DifyAPISQLAlchemyWorkflowRunRepository
 # Workflow log cleanup configuration
 # Enable automatic cleanup of workflow run logs to manage database size
-WORKFLOW_LOG_CLEANUP_ENABLED=true
+WORKFLOW_LOG_CLEANUP_ENABLED=false
 # Number of days to retain workflow run logs (default: 30 days)
 WORKFLOW_LOG_RETENTION_DAYS=30
 # Batch size for workflow log cleanup operations (default: 100)
diff --git a/api/configs/feature/__init__.py b/api/configs/feature/__init__.py
index 65f07d65c3..ff1f983f94 100644
--- a/api/configs/feature/__init__.py
+++ b/api/configs/feature/__init__.py
@@ -1190,7 +1190,7 @@ class AccountConfig(BaseSettings):
 
 
 class WorkflowLogConfig(BaseSettings):
-    WORKFLOW_LOG_CLEANUP_ENABLED: bool = Field(default=True, description="Enable workflow run log cleanup")
+    WORKFLOW_LOG_CLEANUP_ENABLED: bool = Field(default=False, description="Enable workflow run log cleanup")
     WORKFLOW_LOG_RETENTION_DAYS: int = Field(default=30, description="Retention days for workflow run logs")
     WORKFLOW_LOG_CLEANUP_BATCH_SIZE: int = Field(
         default=100, description="Batch size for workflow run log cleanup operations"