diff --git a/sysom_api/apps/vul/views.py b/sysom_api/apps/vul/views.py
index 1d94b719ef030510a3a1418259a36abf09ccbc49..63181aa1b532bcbe10483d1df8318ef0eba56c74 100644
--- a/sysom_api/apps/vul/views.py
+++ b/sysom_api/apps/vul/views.py
@@ -274,10 +274,6 @@ class SaFixHistDetailHostView(APIView):
         return success(result=data)
 
 
-# 因为sysom未使用redis等缓存，所以使用全局变量，在内存中存储上次更新时间
-LAST_UPDATE_SA_TIME = None
-
-
 class UpdateSaView(APIView):
     authentication_classes = [Authentication]
 
@@ -285,21 +281,24 @@ class UpdateSaView(APIView):
         """
         检测最近更新时间，如果小于时间间隔，则直接返回成功
         """
-        global LAST_UPDATE_SA_TIME
-        if LAST_UPDATE_SA_TIME is None:
+        try:
+            last_update_sa_time = VulJobModel.objects.filter(job_name="update_sa").order_by(
+                '-job_end_time').first().job_end_time
+        except AttributeError:
+            last_update_sa_time = None
+
+        if last_update_sa_time is None:
             upsa()
-            LAST_UPDATE_SA_TIME = time.time()
             return success(result="Update security advisory data")
         else:
             # 默认间隔时间为10分
             interval_time = 60 * 10
-            current_time = time.time()
-            if current_time - LAST_UPDATE_SA_TIME < interval_time:
+            current_time = localtime()
+            if (current_time - last_update_sa_time).seconds < interval_time:
                 return success(message="forbidden",
                                result="The data has been updated recently,no need to update it again")
             else:
                 upsa()
-                LAST_UPDATE_SA_TIME = time.time()
                 return success(result="Update security advisory data")