diff --git a/cmd/server/main.go b/cmd/server/main.go
index a871247..ffca5da 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -16,14 +16,27 @@ import (
 )
 
 func main() {
-	// 检查是否已安装
+	// 加载配置（必须先加载）
+	if err := config.Load(""); err != nil {
+		log.Printf("配置加载警告: %v", err)
+	}
+
+	// 如果配置不存在，提示安装
 	if !config.IsInstalled() {
 		fmt.Println("系统未安装，请先访问 /install 进行安装配置")
 	}
 
-	// 加载配置
-	if err := config.Load(""); err != nil {
-		log.Printf("警告: %v", err)
+	// 确保有默认 JWT Secret
+	if config.Cfg == nil {
+		config.Cfg = &config.Config{
+			Server:   config.ServerConfig{Host: "0.0.0.0", Port: 6688, Mode: "release"},
+			Database: config.DatabaseConfig{Type: "sqlite", SQLite: config.SQLiteConfig{Path: "./data/app.db"}},
+			JWT:      config.JWTConfig{Secret: generateRandomSecret(), ExpireTime: 1440},
+			Captcha:  config.CaptchaConfig{ModelPath: "./models"},
+		}
+	}
+	if config.Cfg.JWT.Secret == "" {
+		config.Cfg.JWT.Secret = generateRandomSecret()
 	}
 
 	// 初始化数据库