diff --git a/src/main/java/com/youlai/system/service/impl/AuthServiceImpl.java b/src/main/java/com/youlai/system/service/impl/AuthServiceImpl.java
index 62d8a1b2..b779e5c9 100644
--- a/src/main/java/com/youlai/system/service/impl/AuthServiceImpl.java
+++ b/src/main/java/com/youlai/system/service/impl/AuthServiceImpl.java
@@ -85,7 +85,7 @@ public class AuthServiceImpl implements AuthService {
     @Override
     public CaptchaResult getCaptcha() {
         // 获取验证码
-        GifCaptcha captcha = CaptchaUtil.createGifCaptcha(120, 36, 4); // 宽、高、位数
+        GifCaptcha captcha = CaptchaUtil.createGifCaptcha(120, 40, 4); // 宽、高、位数
         String captchaCode = captcha.getCode(); // 验证码
         String captchaBase64 = captcha.getImageBase64Data(); // 验证码图片Base64