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 e02de1b..a5d19bf 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
@@ -32,7 +32,7 @@ public class JwtUtil {
      */
     private final static String JWT_ISS = "NJCN";
 
-    public static String generateToken(String userId) {
+    public static String getAccessToken(String userId) {
         Map<String, Object> headers = new HashMap<>();
         headers.put("typ", "JWT");
         headers.put("alg", "HS256");
@@ -63,4 +63,17 @@ public class JwtUtil {
     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());
+        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));
+    }
+
 }