diff --git a/backend/pkg/jwt/jwt.go b/backend/pkg/jwt/jwt.go
index 4f3e588..23a2086 100644
--- a/backend/pkg/jwt/jwt.go
+++ b/backend/pkg/jwt/jwt.go
@@ -2,6 +2,7 @@ package jwt
 
 import (
 	"errors"
+	"log"
 	"time"
 	"verification-platform-backend/internal/config"
 
@@ -23,6 +24,9 @@ func GenerateToken(userID uint, username, role string) (string, error) {
 		expireHours = 24
 	}
 
+	jwtSecret := config.GetString("app.jwt_secret")
+	log.Printf("[JWT] GenerateToken using jwt_secret: %s (length: %d)", jwtSecret, len(jwtSecret))
+
 	expiresAt := time.Now().Add(time.Hour * time.Duration(expireHours))
 
 	claims := Claims{
@@ -38,16 +42,20 @@ func GenerateToken(userID uint, username, role string) (string, error) {
 	}
 
 	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
-	return token.SignedString([]byte(config.GetString("app.jwt_secret")))
+	return token.SignedString([]byte(jwtSecret))
 }
 
 // ParseToken 解析JWT令牌
 func ParseToken(tokenString string) (*Claims, error) {
+	jwtSecret := config.GetString("app.jwt_secret")
+	log.Printf("[JWT] ParseToken using jwt_secret: %s (length: %d)", jwtSecret, len(jwtSecret))
+
 	token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
-		return []byte(config.GetString("app.jwt_secret")), nil
+		return []byte(jwtSecret), nil
 	})
 
 	if err != nil {
+		log.Printf("[JWT] ParseToken error: %v", err)
 		return nil, err
 	}