diff --git a/application/admin/view/auth/admin/add.html b/application/admin/view/auth/admin/add.html
index 9ffc51f5..3223a81d 100644
--- a/application/admin/view/auth/admin/add.html
+++ b/application/admin/view/auth/admin/add.html
@@ -20,7 +20,7 @@
     <div class="form-group">
         <label for="nickname" class="control-label col-xs-12 col-sm-2">{:__('Nickname')}:</label>
         <div class="col-xs-12 col-sm-8">
-            <input type="text" class="form-control" id="nickname" name="row[nickname]" autocomplete="off" value="" data-rule="required;username" />
+            <input type="text" class="form-control" id="nickname" name="row[nickname]" autocomplete="off" value="" data-rule="required" />
         </div>
     </div>
     <div class="form-group">
diff --git a/application/config.php b/application/config.php
index 7c0ea0a9..614c8022 100755
--- a/application/config.php
+++ b/application/config.php
@@ -228,15 +228,15 @@ return [
         // 验证码字符集合
         'codeSet'  => '2345678abcdefhijkmnpqrstuvwxyzABCDEFGHJKLMNPQRTUVWXY',
         // 验证码字体大小(px)
-        'fontSize' => 16,
+        'fontSize' => 18,
         // 是否画混淆曲线
         'useCurve' => false,
         //使用中文验证码
         'useZh'    => false,
         // 验证码图片高度
-        'imageH'   => 30,
+        'imageH'   => 40,
         // 验证码图片宽度
-        'imageW'   => 100,
+        'imageW'   => 130,
         // 验证码位数
         'length'   => 4,
         // 验证成功后是否重置