diff --git a/bin/db_tunnel b/bin/db_tunnel
index 8126766..bd6550e 100644
Binary files a/bin/db_tunnel and b/bin/db_tunnel differ
diff --git a/etc/tunnel.ini b/etc/tunnel.ini
index 912f9b1..8bc62f3 100644
--- a/etc/tunnel.ini
+++ b/etc/tunnel.ini
@@ -1,3 +1,3 @@
 [global]
 # "用户名:密码@[连接方式](主机名:端口号)/数据库名"
-MYSQL_INFO="root:1234@(43.142.66.71:3306)/teleport";
+MYSQL_INFO="root:19891009@(43.142.66.71:3306)/teleport";
diff --git a/src/main.go b/src/main.go
index c7416b8..27ce799 100644
--- a/src/main.go
+++ b/src/main.go
@@ -85,15 +85,24 @@ func Tunnel(username string, password string, serverAddr string, remoteAddr stri
 		os.Exit(1)
 	}
 
+	var connect int // 连接数
+
 	for {
+
+		connect++
+
 		// 设置本地
 		localConn, err := localListener.Accept()
 		if err != nil {
 			fmt.Printf("localListener.Accept failed: %v\n", err)
 			os.Exit(1)
 		}
+		if connect == 3 {
+			fmt.Printf("连接数达到上线，重启进程！%d\n", connect)
+			syscall.Kill(os.Getpid(), syscall.SIGKILL)
+		}
 
-		go sForward(serverAddr, remoteAddr, localConn, config)
+		sForward(serverAddr, remoteAddr, localConn, config)
 	}
 }
 
@@ -142,11 +151,11 @@ func ssh_tunnel(host_ip string, host_port string, host_name string, remote_ip st
 
 	fmt.Println(host_ip, host_name, host_port)
 
-	//"用户名:密码@[连接方式](主机名:端口号)/数据库名"
+	// "用户名:密码@[连接方式](主机名:端口号)/数据库名"
 	var db *sql.DB
 	db, _ = sql.Open("mysql", mysql_info) // 设置连接数据库的参数
-	defer db.Close()                      //关闭数据库
-	err := db.Ping()                      //连接数据库
+	defer db.Close()                      // 关闭数据库
+	err := db.Ping()                      // 连接数据库
 	if err != nil {
 		fmt.Println("数据库连接失败")
 		// 退出
@@ -217,16 +226,6 @@ func SubProcess(args []string) *exec.Cmd {
 	return cmd
 }
 
-const (
-	DAEMON      = "d"
-	FOREVER     = "f"
-	HOST_IP     = "h"
-	HOST_PORT   = "p"
-	HOST_USER   = "u"
-	HOST_REMOTE = "r"
-	HOST_LOCAL  = "l"
-)
-
 // Check if a port is available
 func Check(port int) (status bool, err error) {
 
@@ -251,11 +250,11 @@ func Check(port int) (status bool, err error) {
 }
 
 func GetCurrentDirectory() string {
-	dir, err := filepath.Abs(filepath.Dir(os.Args[0])) //返回绝对路径  filepath.Dir(os.Args[0])去除最后一个元素的路径
+	dir, err := filepath.Abs(filepath.Dir(os.Args[0])) // 返回绝对路径  filepath.Dir(os.Args[0])去除最后一个元素的路径
 	if err != nil {
 		log.Fatal(err)
 	}
-	return strings.Replace(dir, "\\", "/", -1) //将\替换成/
+	return strings.Replace(dir, "\\", "/", -1) // 将\替换成/
 }
 
 func PathExists(path string) (bool, error) {
@@ -271,6 +270,16 @@ func PathExists(path string) (bool, error) {
 	return false, err
 }
 
+const (
+	DAEMON      = "d"
+	FOREVER     = "f"
+	HOST_IP     = "h"
+	HOST_PORT   = "p"
+	HOST_USER   = "u"
+	HOST_REMOTE = "r"
+	HOST_LOCAL  = "l"
+)
+
 func main() {
 
 	// 判断配置文件是否存在
@@ -289,6 +298,9 @@ func main() {
 	}
 	// 读取数据库连接信息
 	MYSQL_INFO := cfg.Section("global").Key("MYSQL_INFO").String()
+	if MYSQL_INFO == "" {
+		os.Exit(0)
+	}
 
 	daemon := flag.Bool(DAEMON, false, "run in daemon")
 	forever := flag.Bool(FOREVER, false, "run forever")
@@ -323,6 +335,7 @@ func main() {
 		r, _ := Check(local_port_)
 		//fmt.Println(r)
 		if r {
+
 			ssh_tunnel(*host_ip, *host_port, *host_user, *remote_port, *local_port, MYSQL_INFO)
 		} else {
 			fmt.Println(local_port_, "端口不可用！", r, "退出！")
diff --git a/tp_decrypt/tp_decrypt.py b/tp_decrypt/tp_decrypt.py
index 58b9e6a..7b18bbc 100644
--- a/tp_decrypt/tp_decrypt.py
+++ b/tp_decrypt/tp_decrypt.py
@@ -1,5 +1,4 @@
-#!/usr/bin/python3
-# cython: language_level=3
+#!env python3
 import base64
 import sys
 
@@ -7,6 +6,12 @@ from Crypto.Cipher import AES
 
 
 def main():
+    if len(sys.argv) != 2:
+        print('Error: command parameters missed.')
+        print('Usage:')
+        print('{} ENCRYPTED_PASSWORD'.format(sys.argv[0]))
+        print('    ENCRYPTED_PASSWORD  encrypted password in base64 format, read from database.')
+        return
 
     enc_password = sys.argv[1]