diff --git a/src/main/java/com/youlai/system/common/constant/SecurityConstants.java b/src/main/java/com/youlai/system/common/constant/SecurityConstants.java
index 4bb5244c..84ddcbb8 100644
--- a/src/main/java/com/youlai/system/common/constant/SecurityConstants.java
+++ b/src/main/java/com/youlai/system/common/constant/SecurityConstants.java
@@ -26,15 +26,15 @@ public interface SecurityConstants {
     /**
      * 验证码缓存前缀
      */
-    String VERIFY_CODE_CACHE_PREFIX = "AUTH:VERIFY_CODE:";
+    String CAPTCHA_CODE_CACHE_PREFIX = "captcha_code:";
 
     /**
      * 用户权限集合缓存前缀
      */
-    String USER_PERMS_CACHE_PREFIX = "AUTH:USER_PERMS:";
+    String USER_PERMS_CACHE_PREFIX = "user_perms:";
 
     /**
      * 黑名单Token缓存前缀
      */
-    String BLACK_TOKEN_CACHE_PREFIX = "AUTH:BLACK_TOKEN:";
+    String BLACK_TOKEN_CACHE_PREFIX = "blacklist_token:";
 }
diff --git a/src/main/java/com/youlai/system/filter/VerifyCodeFilter.java b/src/main/java/com/youlai/system/filter/VerifyCodeFilter.java
index 1c911e24..d911938c 100644
--- a/src/main/java/com/youlai/system/filter/VerifyCodeFilter.java
+++ b/src/main/java/com/youlai/system/filter/VerifyCodeFilter.java
@@ -27,15 +27,15 @@ public class VerifyCodeFilter extends OncePerRequestFilter {
 
     private static final AntPathRequestMatcher LOGIN_PATH_REQUEST_MATCHER = new AntPathRequestMatcher(SecurityConstants.LOGIN_PATH, "POST");
 
-    public static final String VERIFY_CODE_PARAM_KEY = "verifyCode";
-    public static final String VERIFY_CODE_KEY_PARAM_KEY = "verifyCodeKey";
+    public static final String CAPTCHA_CODE_PARAM_NAME = "captchaCode";
+    public static final String CAPTCHA_KEY_PARAM_NAME = "captchaKey";
 
     @Override
     public void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
         // 检验登录接口的验证码
         if (LOGIN_PATH_REQUEST_MATCHER.matches(request)) {
             // 请求中的验证码
-            String verifyCode = request.getParameter(VERIFY_CODE_PARAM_KEY);
+            String verifyCode = request.getParameter(CAPTCHA_CODE_PARAM_NAME);
             // TODO 兼容没有验证码的版本(线上请移除这个判断)
             if (StrUtil.isBlank(verifyCode)) {
                 chain.doFilter(request, response);
@@ -43,8 +43,8 @@ public class VerifyCodeFilter extends OncePerRequestFilter {
             }
             // 缓存中的验证码
             StringRedisTemplate redisTemplate = SpringUtil.getBean("stringRedisTemplate", StringRedisTemplate.class);
-            String verifyCodeKey = request.getParameter(VERIFY_CODE_KEY_PARAM_KEY);
-            String cacheVerifyCode = redisTemplate.opsForValue().get(SecurityConstants.VERIFY_CODE_CACHE_PREFIX + verifyCodeKey);
+            String verifyCodeKey = request.getParameter(CAPTCHA_KEY_PARAM_NAME);
+            String cacheVerifyCode = redisTemplate.opsForValue().get(SecurityConstants.CAPTCHA_CODE_CACHE_PREFIX + verifyCodeKey);
             if (cacheVerifyCode == null) {
                 ResponseUtils.writeErrMsg(response, ResultCode.VERIFY_CODE_TIMEOUT);
             } else {
diff --git a/src/main/java/com/youlai/system/model/dto/CaptchaResult.java b/src/main/java/com/youlai/system/model/dto/CaptchaResult.java
index 593728ec..114c8379 100644
--- a/src/main/java/com/youlai/system/model/dto/CaptchaResult.java
+++ b/src/main/java/com/youlai/system/model/dto/CaptchaResult.java
@@ -16,9 +16,9 @@ import lombok.Data;
 public class CaptchaResult {
 
     @Schema(description = "验证码缓存key")
-    private String verifyCodeKey;
+    private String captchaKey;
 
     @Schema(description = "验证码图片Base64字符串")
-    private String captchaImgBase64;
+    private String captchaBase64;
 
 }
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 7b4e8cf8..cd548dcb 100644
--- a/src/main/java/com/youlai/system/service/impl/AuthServiceImpl.java
+++ b/src/main/java/com/youlai/system/service/impl/AuthServiceImpl.java
@@ -5,9 +5,9 @@ import cn.hutool.captcha.generator.MathGenerator;
 import cn.hutool.core.util.IdUtil;
 import cn.hutool.core.util.StrUtil;
 import com.youlai.system.common.constant.SecurityConstants;
+import com.youlai.system.core.security.jwt.JwtTokenProvider;
 import com.youlai.system.model.dto.CaptchaResult;
 import com.youlai.system.model.dto.LoginResult;
-import com.youlai.system.core.security.jwt.JwtTokenProvider;
 import com.youlai.system.service.AuthService;
 import io.jsonwebtoken.Claims;
 import jakarta.servlet.http.HttpServletRequest;
@@ -21,9 +21,12 @@ import org.springframework.stereotype.Service;
 import org.springframework.web.context.request.RequestContextHolder;
 import org.springframework.web.context.request.ServletRequestAttributes;
 
+import java.awt.*;
 import java.util.Date;
 import java.util.concurrent.TimeUnit;
 
+import static java.awt.Font.SANS_SERIF;
+
 /**
  * 认证服务实现类
  *
@@ -85,21 +88,22 @@ public class AuthServiceImpl implements AuthService {
      */
     @Override
     public CaptchaResult getCaptcha() {
-        
+
         MathGenerator mathGenerator=new MathGenerator(1);
         CircleCaptcha circleCaptcha =new CircleCaptcha(120,25,4,3);
         circleCaptcha.setGenerator(mathGenerator);
+        circleCaptcha.setFont(new Font(SANS_SERIF, Font.BOLD, 18));
         String captchaCode = circleCaptcha.getCode(); // 验证码
         String captchaBase64 = circleCaptcha.getImageBase64Data(); // 验证码图片Base64
 
         // 验证码文本缓存至Redis，用于登录校验
-        String verifyCodeKey = IdUtil.fastSimpleUUID();
-        redisTemplate.opsForValue().set(SecurityConstants.VERIFY_CODE_CACHE_PREFIX + verifyCodeKey, captchaCode,
+        String captchaKey = IdUtil.fastSimpleUUID();
+        redisTemplate.opsForValue().set(SecurityConstants.CAPTCHA_CODE_CACHE_PREFIX + captchaKey, captchaCode,
                 120, TimeUnit.SECONDS);
 
         return CaptchaResult.builder()
-                .verifyCodeKey(verifyCodeKey)
-                .captchaImgBase64(captchaBase64)
+                .captchaKey(captchaKey)
+                .captchaBase64(captchaBase64)
                 .build();
     }