diff --git a/IRaCIS.Core.API/Controllers/ExtraController.cs b/IRaCIS.Core.API/Controllers/ExtraController.cs
index 3722593db..b245633d8 100644
--- a/IRaCIS.Core.API/Controllers/ExtraController.cs
+++ b/IRaCIS.Core.API/Controllers/ExtraController.cs
@@ -148,12 +148,15 @@ namespace IRaCIS.Api.Controllers
             IClientProfile profile = DefaultProfile.GetProfile("cn-shanghai", configuration["AliyunOSS:accessKeyId"], configuration["AliyunOSS:accessKeySecret"]);
             DefaultAcsClient client = new DefaultAcsClient(profile);
 
+
+
+
             // 创建一个STS请求
             AssumeRoleRequest request = new AssumeRoleRequest
             {
                 RoleArn = "acs:ram::1899121822495495:role/oss-upload", // 角色ARN，需要替换为你的角色ARN
-                RoleSessionName = "session-name", // 角色会话名称，可自定义
-                DurationSeconds = 3600, // 令牌有效期（单位：秒），这里设置为1小时
+                RoleSessionName = $"session-name-{Guid.NewGuid()}", // 角色会话名称，可自定义
+                DurationSeconds = 60, // 令牌有效期（单位：秒），这里设置为1小时
             };