diff --git a/application/config.php b/application/config.php
index 96299e93..3f165de6 100755
--- a/application/config.php
+++ b/application/config.php
@@ -234,9 +234,9 @@ return [
         //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