diff --git a/Src/Dlhis.ScheduledTask/TaskAssignment/Controllers/HangfireController.cs b/Src/Dlhis.ScheduledTask/TaskAssignment/Controllers/HangfireController.cs
index 207f315d..f92169c4 100644
--- a/Src/Dlhis.ScheduledTask/TaskAssignment/Controllers/HangfireController.cs
+++ b/Src/Dlhis.ScheduledTask/TaskAssignment/Controllers/HangfireController.cs
@@ -1,5 +1,7 @@
 using Dlhis.Basic.Api;
 using Dlhis.Jip.Api.Request;
+using Hangfire;
+using Kurisu.AspNetCore.Utils;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 
@@ -13,11 +15,11 @@ namespace Dlhis.ScheduledTask.TaskAssignment.Controllers;
 [ApiController]
 public class HangfireController : ControllerBase
 {
-    private readonly ISyncApi _gainfoSyncApi;
+    private readonly RedisCache _redisCache;
 
-    public HangfireController(ISyncApi gainfoSyncApi)
+    public HangfireController( RedisCache redisCache)
     {
-        _gainfoSyncApi = gainfoSyncApi;
+        _redisCache = redisCache;
     }
 
     /// <summary>
@@ -28,7 +30,12 @@ public class HangfireController : ControllerBase
     [HttpPost("sap/person/no")]
     public async Task PersonManuallySync(SapNoRequest request)
     {
-        await _gainfoSyncApi.SyncGainfoByUserCodeAsync(request.Code);
+        var jobKey = $"hangfire:background:person:{request.Code}";
+        await using var handler = await _redisCache.LockAsync(jobKey);
+        if (handler.Acquired)
+        {
+            BackgroundJob.Enqueue<ISyncApi>(x => x.SyncGainfoByUserCodeAsync(request.Code));
+        }
     }
 
     /// <summary>
@@ -39,6 +46,11 @@ public class HangfireController : ControllerBase
     [HttpPost("sap/werk/no")]
     public async Task WerkManuallySync(SapNoRequest request)
     {
-        await _gainfoSyncApi.SyncGainfoByWerkAsync(request.Code);
+        var jobKey = $"hangfire:background:werk:{request.Code}";
+        await using var handler = await _redisCache.LockAsync(jobKey);
+        if (handler.Acquired)
+        {
+            BackgroundJob.Enqueue<ISyncApi>(x => x.SyncGainfoByWerkAsync(request.Code));
+        }
     }
 }
\ No newline at end of file