diff --git a/24Hour/Controllers/Common/CommonController.cs b/24Hour/Controllers/Common/CommonController.cs
index f961ef8..46305df 100644
--- a/24Hour/Controllers/Common/CommonController.cs
+++ b/24Hour/Controllers/Common/CommonController.cs
@@ -2765,7 +2765,7 @@ namespace _24Hour.Controllers.Common
                     var hzname = $"{Path.GetExtension(fname)}";
 
                     var allowedExtensions = new string[] { ".png", ".jpg", ".jpeg", ".bmp", ".zip" };
-                    if (allowedExtensions.Contains(hzname.ToLower()))
+                    if (allowedExtensions.Contains(hzname.ToLower())==false)
                     {
                         outParm.IsSucceed = false;
                         outParm.Message = "不被允许的文件格式!";