diff --git a/jwt.go b/jwt.go
index 39f0160..6920141 100644
--- a/jwt.go
+++ b/jwt.go
@@ -46,7 +46,10 @@ func (j *ownJwt) Generate(signMethod jwt.SigningMethod, secret string, claims jw
 // Author : go_developer@163.com<白茶清欢>
 //
 // Date : 20:13 2023/2/11
-func (j *ownJwt) Validate(inputToken string, secret string) (jwt.Claims, error) {
+func (j *ownJwt) Validate(inputToken string, secret string, convert func(c jwt.Claims) error) error {
+	if nil == convert {
+		return errors.New("convert func is nil")
+	}
 	var (
 		token *jwt.Token
 		err   error
@@ -55,10 +58,15 @@ func (j *ownJwt) Validate(inputToken string, secret string) (jwt.Claims, error)
 	if token, err = jwt.Parse(inputToken, func(tokenInfo *jwt.Token) (interface{}, error) {
 		return []byte(secret), nil
 	}); nil != err {
-		return nil, errors.New("token parse fail : " + err.Error())
+		return errors.New("token parse fail : " + err.Error())
 	}
 	if !token.Valid {
-		return nil, errors.New("token is valid : " + err.Error())
+		return errors.New("token is valid : " + err.Error())
 	}
-	return token.Claims, nil
+	if nil != convert {
+		if err = convert(token.Claims); nil != err {
+			return err
+		}
+	}
+	return nil
 }