diff --git a/Admin.NET/Admin.NET.Web.Entry/wwwroot/template/service_InputDto.cs.vm b/Admin.NET/Admin.NET.Web.Entry/wwwroot/template/service_InputDto.cs.vm
index 3a7272cf..c5c9d3d4 100644
--- a/Admin.NET/Admin.NET.Web.Entry/wwwroot/template/service_InputDto.cs.vm
+++ b/Admin.NET/Admin.NET.Web.Entry/wwwroot/template/service_InputDto.cs.vm
@@ -86,7 +86,7 @@ if (@column.WhetherAddUpdate == "Y"){
         @if(@column.WhetherRequired=="Y"){
         @:[Required(ErrorMessage = "@(@column.ColumnComment)不能为空")]
         }
-        @if(@column.NetType.StartsWith("string")&&!@column.RuleItems.Any(t=>t.Type=="length")){
+        @if(@column.NetType.StartsWith("string")&&!@column.RuleItems.Any(t=>t.Type=="length")&&@column.ColumnLength>0){
         @:[StringLength(@(@column.ColumnLength), ErrorMessage = "@(@column.ColumnComment)不能超过@(@column.ColumnLength)个字符")]
         }
         @if(@column.AnyRule){
@@ -143,7 +143,7 @@ if (@column.WhetherAddUpdate == "Y"){
         @if(@column.WhetherRequired=="Y"){
         @:[Required(ErrorMessage = "@(@column.ColumnComment)不能为空")]
         }
-        @if(@column.NetType.StartsWith("string")&&!@column.RuleItems.Any(t=>t.Type=="length")){
+        @if(@column.NetType.StartsWith("string")&&!@column.RuleItems.Any(t=>t.Type=="length")&&@column.ColumnLength>0){
         @:[StringLength(@(@column.ColumnLength), ErrorMessage = "@(@column.ColumnComment)不能超过@(@column.ColumnLength)个字符")]
         }
         @if(@column.AnyRule){