diff --git a/packages/services/agent-service/src/infrastructure/dingtalk/dingtalk-router.service.ts b/packages/services/agent-service/src/infrastructure/dingtalk/dingtalk-router.service.ts
index b5c274b..6377133 100644
--- a/packages/services/agent-service/src/infrastructure/dingtalk/dingtalk-router.service.ts
+++ b/packages/services/agent-service/src/infrastructure/dingtalk/dingtalk-router.service.ts
@@ -506,7 +506,7 @@ export class DingTalkRouterService implements OnModuleInit, OnModuleDestroy {
         {
           prompt: text,
           sessionKey: `agent:main:dt-${userId}`,
-          timeoutSeconds: TASK_TIMEOUT_S,
+          idempotencyKey: msg.msgId,
         },
         (TASK_TIMEOUT_S + 5) * 1000,
       );