diff --git a/Bootstrap.Admin/Content/js/Longbow.Common.js b/Bootstrap.Admin/Content/js/Longbow.Common.js
index f8fda4b6..2a0ba784 100644
--- a/Bootstrap.Admin/Content/js/Longbow.Common.js
+++ b/Bootstrap.Admin/Content/js/Longbow.Common.js
@@ -129,14 +129,22 @@
             });
             that.animate({ marginTop: "+=" + getHeight() });
         },
-        autoValidate: function (options, handler) {
+        autoValidate: function (rules, messages, handler) {
             // validate
             var $this = $(this);
+            if (messages && $.isArray(messages.button)) {
+                handler = messages;
+                messages = {};
+            }
+            else {
+                messages = $.extend({}, messages);
+            }
             $this.validate({
                 validClass: "has-success",
                 errorClass: "has-error",
                 ignore: ".ignore",
-                rules: $.extend({}, options),
+                rules: $.extend({}, rules),
+                messages: $.extend({}, messages),
                 highlight: function (element, errorClass, validClass) {
                     $(element).parents('.form-group').addClass(errorClass).removeClass(validClass);
                 },
diff --git a/Bootstrap.Admin/Controllers/UsersController.cs b/Bootstrap.Admin/Controllers/UsersController.cs
index 0ec0a38d..0b26d72b 100644
--- a/Bootstrap.Admin/Controllers/UsersController.cs
+++ b/Bootstrap.Admin/Controllers/UsersController.cs
@@ -30,6 +30,11 @@ namespace Bootstrap.Admin.Controllers
         [HttpPut]
         public bool Put([FromBody]User value)
         {
+            if (value.UserStatus == 9)
+            {
+                // vlaidate userName
+                return UserHelper.RetrieveUsersByName(value.UserName) == null;
+            }
             var ret = false;
             var userName = User.Identity.Name;
             if (value.UserName == userName && !LgbPrincipal.IsAdmin(userName))
@@ -71,9 +76,9 @@ namespace Bootstrap.Admin.Controllers
         /// <param name="id"></param>
         /// <returns></returns>
         [HttpGet]
-        public User Get(int id)
+        public User Get(string userName)
         {
-            return UserHelper.RetrieveUsers().FirstOrDefault(t => t.ID == id);
+            return UserHelper.RetrieveUsersByName(userName);
         }
         /// <summary>
         /// 
diff --git a/Bootstrap.Admin/Scripts/Users.js b/Bootstrap.Admin/Scripts/Users.js
index 297ad6b6..3e95879e 100644
--- a/Bootstrap.Admin/Scripts/Users.js
+++ b/Bootstrap.Admin/Scripts/Users.js
@@ -92,7 +92,14 @@
     $('#dataForm').autoValidate({
         userName: {
             required: true,
-            maxlength: 50
+            maxlength: 50,
+            remote: {
+                url: "../api/Users/",
+                type: "PUT",
+                data: {
+                    UserStatus: 9
+                }
+            }
         },
         password: {
             required: true,
@@ -106,5 +113,9 @@
             required: true,
             maxlength: 50
         }
+    }, {
+        userName: {
+            remote: "此登陆名称已存在"
+        }
     });
 });
\ No newline at end of file
diff --git a/Bootstrap.DataAccess/User.cs b/Bootstrap.DataAccess/User.cs
index eb7f9e26..faec8d6f 100644
--- a/Bootstrap.DataAccess/User.cs
+++ b/Bootstrap.DataAccess/User.cs
@@ -40,7 +40,7 @@ namespace Bootstrap.DataAccess
         /// </summary>
         public string Description { get; set; }
         /// <summary>
-        /// 获得/设置 用户当前状态 0 表示管理员注册用户 1 表示用户自己注册 2 表示管理员批复
+        /// 获得/设置 用户当前状态 0 表示管理员注册用户 1 表示用户自己注册 2 表示管理员批复 9 表示前台remote validate
         /// </summary>
         public int UserStatus { get; set; }
         /// <summary>
diff --git a/DatabaseScripts/Procedures.sql b/DatabaseScripts/Procedures.sql
index c9bacdd0..739361cf 100644
--- a/DatabaseScripts/Procedures.sql
+++ b/DatabaseScripts/Procedures.sql
@@ -200,7 +200,7 @@ BEGIN
 		begin
 			declare @approveTime datetime = null
 			if @userStatus = 0 set @approveTime = GETDATE() 
-			if(@id = 0)
+			if(@id = 0 and not exists (select 1 from Users Where UserName = @userName))
 				Insert Into Users (UserName, [Password], PassSalt, DisplayName, RegisterTime, ApprovedTime, [Description]) values (@userName, @password, @passSalt, @displayName, GETDATE(), @approveTime, @description)
 			else 
 				Update Users set UserName = @userName, Password = @password, PassSalt = @passSalt, DisplayName = @displayName where ID = @id