diff --git a/WcsMain/ApiServe/Controllers/WcsController/StackerConveyController.cs b/WcsMain/ApiServe/Controllers/WcsController/StackerConveyController.cs
index 58f00db..f701f56 100644
--- a/WcsMain/ApiServe/Controllers/WcsController/StackerConveyController.cs
+++ b/WcsMain/ApiServe/Controllers/WcsController/StackerConveyController.cs
@@ -23,13 +23,13 @@ public class StackerConveyController(StackerConveyService stackerConveyService)
     /// </summary>
     /// <returns></returns>
     [HttpGet("queryStackerConveyInfo")]
-    public WcsApiResponse<List<AppStackerConvey>>? QueryStackerConveyInfo() => stackerConveyService.QueryStackerConveyInfo();
+    public WcsApiResponse<List<AppStackerConvey>> QueryStackerConveyInfo() => stackerConveyService.QueryStackerConveyInfo();
 
     /// <summary>
     /// 查询所有库前输送线状态信息
     /// </summary>
     /// <returns></returns>
     [HttpGet("queryStackerConveyStatus")]
-    public WcsApiResponse<List<StackerConveyStatusResponse>>? QueryStackerConveyStatus() => stackerConveyService.QueryStackerConveyStatus();
+    public WcsApiResponse<List<StackerConveyStatusResponse>> QueryStackerConveyStatus() => stackerConveyService.QueryStackerConveyStatus();
 
 }
diff --git a/WcsMain/ApiServe/Service/WcsService/StackerConveyService.cs b/WcsMain/ApiServe/Service/WcsService/StackerConveyService.cs
index 24117dd..e185520 100644
--- a/WcsMain/ApiServe/Service/WcsService/StackerConveyService.cs
+++ b/WcsMain/ApiServe/Service/WcsService/StackerConveyService.cs
@@ -22,7 +22,7 @@ public class StackerConveyService(AppStackerConveyDao stackerConveyDao, ConveyOp
     /// 查询所有的库前输送线信息
     /// </summary>
     /// <returns></returns>
-    public WcsApiResponse<List<AppStackerConvey>>? QueryStackerConveyInfo()
+    public WcsApiResponse<List<AppStackerConvey>> QueryStackerConveyInfo()
     {
         List<AppStackerConvey>? stackerConveys = stackerConveyDao.Query();
         return stackerConveys == default ? WcsApiResponseFactory.DataBaseErr<List<AppStackerConvey>>() : WcsApiResponseFactory.Success(stackerConveys);
@@ -32,7 +32,7 @@ public class StackerConveyService(AppStackerConveyDao stackerConveyDao, ConveyOp
     /// 查询所有的库前输送线状态信息
     /// </summary>
     /// <returns></returns>
-    public WcsApiResponse<List<StackerConveyStatusResponse>>? QueryStackerConveyStatus()
+    public WcsApiResponse<List<StackerConveyStatusResponse>> QueryStackerConveyStatus()
     {
         List<AppStackerConvey>? stackerConveys = stackerConveyDao.Query();
         if(stackerConveys == default) return WcsApiResponseFactory.DataBaseErr<List<StackerConveyStatusResponse>>();