diff --git a/api/db/services/evaluation_service.py b/api/db/services/evaluation_service.py
index c5a24176d..3f523b1d8 100644
--- a/api/db/services/evaluation_service.py
+++ b/api/db/services/evaluation_service.py
@@ -65,6 +65,7 @@ class EvaluationService(CommonService):
             (success, dataset_id or error_message)
         """
         try:
+            timestamp= current_timestamp()
             dataset_id = get_uuid()
             dataset = {
                 "id": dataset_id,
@@ -73,8 +74,8 @@ class EvaluationService(CommonService):
                 "description": description,
                 "kb_ids": kb_ids,
                 "created_by": user_id,
-                "create_time": current_timestamp(),
-                "update_time": current_timestamp(),
+                "create_time": timestamp,
+                "update_time": timestamp,
                 "status": StatusEnum.VALID.value
             }
 
diff --git a/api/db/services/pipeline_operation_log_service.py b/api/db/services/pipeline_operation_log_service.py
index 9b344d006..6858751eb 100644
--- a/api/db/services/pipeline_operation_log_service.py
+++ b/api/db/services/pipeline_operation_log_service.py
@@ -169,11 +169,12 @@ class PipelineOperationLogService(CommonService):
             operation_status=operation_status,
             avatar=avatar,
         )
-        log["create_time"] = current_timestamp()
-        log["create_date"] = datetime_format(datetime.now())
-        log["update_time"] = current_timestamp()
-        log["update_date"] = datetime_format(datetime.now())
-
+        timestamp = current_timestamp()
+        datetime_now = datetime.now()
+        log["create_time"] = timestamp
+        log["create_date"] = datetime_format(datetime_now)
+        log["update_time"] = timestamp
+        log["update_date"] = datetime_format(datetime_now)
         with DB.atomic():
             obj = cls.save(**log)