diff --git a/Learun.Application.Web/AppApi/ObjectTypeApiController.cs b/Learun.Application.Web/AppApi/ObjectTypeApiController.cs
index 8fe7effb..7aa15d4a 100644
--- a/Learun.Application.Web/AppApi/ObjectTypeApiController.cs
+++ b/Learun.Application.Web/AppApi/ObjectTypeApiController.cs
@@ -631,10 +631,17 @@ namespace Learun.Application.Web.AppApi
                             //每个位号的属性信息
                             foreach (var tag in objectType.tags)
                             {
-                                if (userDict.TryGetValue(tag.CreateUserID, out string createUserName))
+                                if (!string.IsNullOrEmpty(tag.CreateUserID))
                                 {
-                                    tag.CreateUserName = createUserName;// allUser.FirstOrDefault(x => x.F_UserId == item.CreateUserID)?.F_RealName;
+                                    if (userDict.TryGetValue(tag.CreateUserID, out string createUserName))
+                                    {
+                                        tag.CreateUserName = createUserName;// allUser.FirstOrDefault(x => x.F_UserId == item.CreateUserID)?.F_RealName;
 
+                                    }
+                                }
+                                else
+                                {
+                                    tag.CreateUserName = string.Empty;
                                 }
 
                                 tag.EngineDataProperty = tagPropDictByTag[tag.EngineDataID];// tagPropAll.Where(x => x.EngineDataID == tag.EngineDataID).ToList();