diff --git a/server/jumpserver.py b/server/jumpserver.py
index 55529d2..aea1472 100644
--- a/server/jumpserver.py
+++ b/server/jumpserver.py
@@ -198,16 +198,18 @@ def checkCookie(request):
 
 @app.before_request
 def before_request():
-    g.db = connect_db()
+    g.isconnect_db = False
     if request.path != "/sso" and (not checkCookie(request)):
         return redirect_sso()
+
+    g.db = connect_db()
+    g.isconnect_db = True
  
 
 @app.after_request
 def after_request(response):
-    if g.db != None:
+    if g.isconnect_db:
         g.db.close()
-        g.db = None
     return response