diff --git a/utils/jwt.go b/utils/jwt.go
index 81ea789..23f6ab3 100644
--- a/utils/jwt.go
+++ b/utils/jwt.go
@@ -1,6 +1,7 @@
 package utils
 
 import (
+	"errors"
 	"github.com/golang-jwt/jwt/v5"
 	"time"
 	"vote-api/config"
@@ -13,11 +14,18 @@ type Token struct {
 
 // NewJWT GenerateJWT 生成JWT
 func (t Token) NewJWT() (string, error) {
-	ttl := time.Duration(config.C.Jwt.Ttl)
+	now := time.Now()
+	year, month, day := now.Date()
+	location := now.Location()
+	validTime := time.Date(year, month, day, 23, 59, 59, 0, location)
+	duration := validTime.Sub(now)
+	if duration < 0 {
+		return "", errors.New("登录失败")
+	}
 
-	t.RegisteredClaims.ExpiresAt = jwt.NewNumericDate(time.Now().Add(ttl * time.Hour)) // 过期时间24小时
-	t.RegisteredClaims.IssuedAt = jwt.NewNumericDate(time.Now())                       // 签发时间
-	t.RegisteredClaims.NotBefore = jwt.NewNumericDate(time.Now())                      // 生效时间
+	t.RegisteredClaims.ExpiresAt = jwt.NewNumericDate(time.Now().Add(duration)) // 过期时间24小时
+	t.RegisteredClaims.IssuedAt = jwt.NewNumericDate(time.Now())                // 签发时间
+	t.RegisteredClaims.NotBefore = jwt.NewNumericDate(time.Now())               // 生效时间
 
 	// 使用HS256签名算法
 	token := jwt.NewWithClaims(jwt.SigningMethodHS256, t)