diff --git a/src/WMS.Web.Domain/Services/Public/ErpInventoryService.cs b/src/WMS.Web.Domain/Services/Public/ErpInventoryService.cs
index 4cf1ed93..7d52610f 100644
--- a/src/WMS.Web.Domain/Services/Public/ErpInventoryService.cs
+++ b/src/WMS.Web.Domain/Services/Public/ErpInventoryService.cs
@@ -76,7 +76,8 @@ namespace WMS.Web.Domain.Services.Public
 
                 string json = resData["data"].ToString();
                 var datas = JsonConvert.DeserializeObject<List<ErpInventoryDto>>(json);
-                list.AddRange(datas);
+                if (datas != null && datas.Count() > 0)
+                    list.AddRange(datas);
 
                 int num = Convert.ToInt32(resData["rowcount"]) / 10000;
                 for (int i = 1; i <= num; i++)
@@ -94,7 +95,8 @@ namespace WMS.Web.Domain.Services.Public
 
                     json = resData["data"].ToString();
                     datas = JsonConvert.DeserializeObject<List<ErpInventoryDto>>(json);
-                    list.AddRange(datas);
+                    if (datas != null && datas.Count() > 0)
+                        list.AddRange(datas);
                 }
             }