diff --git a/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.Form/Scheme/FormSchemeBLL.cs b/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.Form/Scheme/FormSchemeBLL.cs
index 2964baaf7..4cff056d4 100644
--- a/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.Form/Scheme/FormSchemeBLL.cs	
+++ b/Learun.Framework.Ultimate V7/Learun.Framework.Module/Learun.Application.Module/Learun.Application.Form/Scheme/FormSchemeBLL.cs	
@@ -1070,22 +1070,25 @@ namespace Learun.Application.Form
                     string querySql = " SELECT ";
                     if (tableComponts.ContainsKey(tableItem.data.name) && !res.ContainsKey(tableItem.data.name))
                     {
-                        foreach (var compont in tableComponts[tableItem.data.name])
+                        DataTable dt = null;
+                        if (tableComponts[tableItem.data.name].Count > 0)
                         {
-                            querySql += compont.field + " , ";
-                        }
-
-                        if (string.IsNullOrEmpty(keyValue))
-                        {
-                            keyValue = pData[tableItem.data.relationField];
-                        }
+                            foreach (var compont in tableComponts[tableItem.data.name])
+                            {
+                                querySql += compont.field + " , ";
+                            }
 
-                        querySql = querySql.Remove(querySql.Length - 2, 2);
-                        querySql += " FROM " + tableItem.data.name + " WHERE " + tableItem.data.field + " = @keyValue";
+                            if (string.IsNullOrEmpty(keyValue))
+                            {
+                                keyValue = pData[tableItem.data.relationField];
+                            }
 
-                        DataTable dt = databaseLinkIBLL.FindTable(dbId, querySql, new { keyValue = keyValue });
-                        res.Add(tableItem.data.name, dt);
+                            querySql = querySql.Remove(querySql.Length - 2, 2);
+                            querySql += " FROM " + tableItem.data.name + " WHERE " + tableItem.data.field + " = @keyValue";
 
+                            dt = databaseLinkIBLL.FindTable(dbId, querySql, new { keyValue = keyValue });
+                            res.Add(tableItem.data.name, dt);
+                        }
                         // 获取它的从表数据
                         if (tableItem.ChildNodes.Count > 0 && dt.Rows.Count > 0)
                         {