diff --git a/njcn-common/src/main/java/com/njcn/common/pojo/constant/SecurityConstants.java b/njcn-common/src/main/java/com/njcn/common/pojo/constant/SecurityConstants.java
index ceb3bba..067ca10 100644
--- a/njcn-common/src/main/java/com/njcn/common/pojo/constant/SecurityConstants.java
+++ b/njcn-common/src/main/java/com/njcn/common/pojo/constant/SecurityConstants.java
@@ -67,7 +67,7 @@ public interface SecurityConstants {
 
     String GRANT_TYPE_KEY = "grant_type";
 
-    String REFRESH_TOKEN_KEY = "refresh_token";
+    String REFRESH_TOKEN_KEY = "Refresh-token";
 
     /**
      * 黑名单token前缀
diff --git a/njcn-common/src/main/java/com/njcn/common/utils/JwtUtil.java b/njcn-common/src/main/java/com/njcn/common/utils/JwtUtil.java
index a5d19bf..3933b8f 100644
--- a/njcn-common/src/main/java/com/njcn/common/utils/JwtUtil.java
+++ b/njcn-common/src/main/java/com/njcn/common/utils/JwtUtil.java
@@ -1,7 +1,9 @@
 package com.njcn.common.utils;
 
+import cn.hutool.core.convert.NumberWithFormat;
 import cn.hutool.core.date.DateUnit;
 import cn.hutool.jwt.JWT;
+import cn.hutool.jwt.JWTPayload;
 import cn.hutool.jwt.JWTUtil;
 import com.njcn.common.pojo.constant.SecurityConstants;
 
@@ -16,9 +18,9 @@ import java.util.Map;
  */
 public class JwtUtil {
     /**
-     * 过期时间(单位:秒)
+     * 一天的秒数(单位:秒)
      */
-    public static final long ACCESS_EXPIRE = DateUnit.DAY.getMillis() / 1000;
+    public static final long DAY_SECOND = DateUnit.DAY.getMillis() / 1000;
 
     private final static String SECRET = "da3f9a7ad5a7d9dd5a7d9dd5a7d9d";
 
@@ -38,7 +40,7 @@ public class JwtUtil {
         headers.put("alg", "HS256");
         Map<String, Object> payload = new HashMap<>();
         payload.put(SecurityConstants.USER_ID, userId);
-        payload.put("exp", Instant.now().plusSeconds(ACCESS_EXPIRE).getEpochSecond());
+        payload.put("exp", Instant.now().plusSeconds(DAY_SECOND * 2).getEpochSecond());
         payload.put("sub", SUBJECT);
         payload.put("iss", JWT_ISS);
         payload.put("iat", Instant.now().getEpochSecond());
@@ -50,7 +52,12 @@ public class JwtUtil {
     }
 
     public static boolean isExpired(String token) {
-        return !JWT.of(token).setKey(SECRET.getBytes(StandardCharsets.UTF_8)).validate(0);
+        JWT jwt = JWT.of(token).setKey(SECRET.getBytes(StandardCharsets.UTF_8));
+        JWTPayload payload = jwt.getPayload();
+
+        NumberWithFormat exp = (NumberWithFormat) payload.getClaim("exp");
+        long currentTime = Instant.now().getEpochSecond();
+        return currentTime > exp.longValue();
     }
 
     public static Map<String, Object> parseToken(String token) {
@@ -60,20 +67,9 @@ public class JwtUtil {
                 .getClaimsJson();
     }
 
-    public static void invalidateToken(String token) {
-        JWT.of(token).setKey(SECRET.getBytes(StandardCharsets.UTF_8)).setPayload("exp", Instant.now().getEpochSecond());
-    }
-
     public static String getRefreshToken(String token) {
         Map<String, Object> payload = JWTUtil.parseToken(token).getPayload().getClaimsJson();
-        payload.put("exp", Instant.now().plusSeconds(ACCESS_EXPIRE * 7).getEpochSecond());
+        payload.put("exp", Instant.now().plusSeconds(DAY_SECOND * 4).getEpochSecond());
         return JWTUtil.createToken(payload, SECRET.getBytes(StandardCharsets.UTF_8));
     }
-
-    public static void main(String[] args) {
-        String token = getAccessToken("123456");
-        System.out.println(token);
-        System.out.println(parseToken(token));
-    }
-
 }