diff --git a/IRaCIS.Core.Application/Helper/OSSService.cs b/IRaCIS.Core.Application/Helper/OSSService.cs
index 57c28727c..93f96b3f2 100644
--- a/IRaCIS.Core.Application/Helper/OSSService.cs
+++ b/IRaCIS.Core.Application/Helper/OSSService.cs
@@ -936,13 +936,13 @@ public class OSSService(IOptionsMonitor<ObjectStoreServiceOptions> options,
     {
 
 
-
+       // 过期时间 ≤ 当前时间 + 15分钟 时需要续期
 
         if (ObjectStoreServiceOptions.ObjectStoreUse == "AliyunOSS")
         {
-            if (AliyunOSSTempToken != null && AliyunOSSTempToken.Expiration > DateTime.UtcNow.AddMinutes(15))
+            if (AliyunOSSTempToken != null && AliyunOSSTempToken.Expiration > DateTime.Now.AddMinutes(15))
             {
-                return;
+                return; // 还有15分钟以上，不需要续期
             }
 
             lock (_tokenLock)