diff --git a/vnt-cli/src/config/mod.rs b/vnt-cli/src/config/mod.rs
index 1e75b6b..2d8d3f0 100644
--- a/vnt-cli/src/config/mod.rs
+++ b/vnt-cli/src/config/mod.rs
@@ -5,6 +5,7 @@ use std::str::FromStr;
 use serde::{Deserialize, Serialize};
 
 use vnt::channel::punch::PunchModel;
+use vnt::channel::UseChannelType;
 use vnt::cipher::CipherModel;
 use vnt::core::Config;
 
@@ -24,7 +25,7 @@ pub struct FileConfig {
     pub mtu: Option<u32>,
     pub tcp: bool,
     pub ip: Option<String>,
-    pub relay: bool,
+    pub use_channel: String,
     #[cfg(feature = "ip_proxy")]
     pub no_proxy: bool,
     pub server_encrypt: bool,
@@ -58,14 +59,14 @@ impl Default for FileConfig {
             mtu: None,
             tcp: false,
             ip: None,
-            relay: false,
+            use_channel: "all".to_string(),
             #[cfg(feature = "ip_proxy")]
             no_proxy: false,
             server_encrypt: false,
             parallel: 1,
             cipher_model: "aes_gcm".to_string(),
             finger: false,
-            punch_model: "".to_string(),
+            punch_model: "all".to_string(),
             ports: None,
             cmd: false,
             first_latency: false,
@@ -137,6 +138,8 @@ pub fn read_config(file_path: &str) -> io::Result<(Config, bool)> {
 
     let punch_model = PunchModel::from_str(&file_conf.punch_model)
         .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
+    let use_channel_type = UseChannelType::from_str(&file_conf.use_channel)
+        .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
     let config = Config::new(
         #[cfg(any(target_os = "windows", target_os = "linux"))]
         file_conf.tap,
@@ -152,7 +155,6 @@ pub fn read_config(file_path: &str) -> io::Result<(Config, bool)> {
         file_conf.mtu,
         file_conf.tcp,
         virtual_ip,
-        file_conf.relay,
         #[cfg(feature = "ip_proxy")]
         file_conf.no_proxy,
         file_conf.server_encrypt,
@@ -163,6 +165,7 @@ pub fn read_config(file_path: &str) -> io::Result<(Config, bool)> {
         file_conf.ports,
         file_conf.first_latency,
         file_conf.device_name,
+        use_channel_type,
     )
     .unwrap();
     Ok((config, file_conf.cmd))
diff --git a/vnt-cli/src/main.rs b/vnt-cli/src/main.rs
index 3e0c8af..4b5181f 100644
--- a/vnt-cli/src/main.rs
+++ b/vnt-cli/src/main.rs
@@ -8,6 +8,7 @@ use getopts::Options;
 
 use common::args_parse::{ips_parse, out_ips_parse};
 use vnt::channel::punch::PunchModel;
+use vnt::channel::UseChannelType;
 use vnt::cipher::CipherModel;
 use vnt::core::{Config, Vnt};
 
@@ -57,6 +58,7 @@ fn main() {
     opts.optflag("", "cmd", "开启窗口输入");
     opts.optflag("", "no-proxy", "关闭内置代理");
     opts.optflag("", "first-latency", "优先延迟");
+    opts.optflag("", "use-channel", "使用通道 relay/p2p,默认两者都使用");
     opts.optopt("f", "", "配置文件", "<conf>");
     //"后台运行时,查看其他设备列表"
     opts.optflag("", "list", "后台运行时,查看其他设备列表");
@@ -213,6 +215,7 @@ fn main() {
         }
         let tcp_channel = matches.opt_present("tcp");
         let relay = matches.opt_present("relay");
+
         let parallel = matches.opt_get::<usize>("par").unwrap().unwrap_or(1);
         if parallel == 0 {
             println!("'--par {}' invalid", parallel);
@@ -256,6 +259,17 @@ fn main() {
             .opt_get::<PunchModel>("punch")
             .unwrap()
             .unwrap_or(PunchModel::All);
+        let use_channel_type = matches
+            .opt_get::<UseChannelType>("use-channel")
+            .unwrap()
+            .unwrap_or_else(||{
+                if relay{
+                    UseChannelType::Relay
+                }else{
+                    UseChannelType::All
+                }
+            });
+
         let ports = matches
             .opt_get::<String>("ports")
             .unwrap_or(None)
@@ -280,7 +294,6 @@ fn main() {
             mtu,
             tcp_channel,
             virtual_ip,
-            relay,
             #[cfg(feature = "ip_proxy")]
             no_proxy,
             server_encrypt,
@@ -291,6 +304,7 @@ fn main() {
             ports,
             first_latency,
             device_name,
+            use_channel_type,
         )
         .unwrap();
         (config, cmd)
@@ -414,7 +428,6 @@ fn print_usage(program: &str, _opts: Options) {
 
     println!("  --tcp               和服务端使用tcp通信,默认使用udp,遇到udp qos时可指定使用tcp");
     println!("  --ip <ip>           指定虚拟ip,指定的ip不能和其他设备重复,必须有效并且在服务端所属网段下,默认情况由服务端分配");
-    println!("  --relay             仅使用服务器转发,不使用p2p,默认情况允许使用p2p");
     println!("  --par <parallel>    任务并行度(必须为正整数),默认值为1");
     if !enums.is_empty() {
         println!(
@@ -425,12 +438,13 @@ fn print_usage(program: &str, _opts: Options) {
     if !enums.is_empty() {
         println!("  --finger            增加数据指纹校验,可增加安全性,如果服务端开启指纹校验,则客户端也必须开启");
     }
-    println!("  --punch <punch>     取值ipv4/ipv6,ipv4表示仅使用ipv4打洞");
+    println!("  --punch <punch>     取值ipv4/ipv6/all,ipv4表示仅使用ipv4打洞");
     println!("  --ports <port,port> 取值0~65535,指定本地监听的一组端口,默认监听两个随机端口,使用过多端口会增加网络负担");
     println!("  --cmd               开启交互式命令,使用此参数开启控制台输入");
     #[cfg(feature = "ip_proxy")]
     println!("  --no-proxy          关闭内置代理,如需点对网则需要配置网卡NAT转发");
     println!("  --first-latency     优先低延迟的通道,默认情况优先使用p2p通道");
+    println!("  --use-channel <p2p> 使用通道 relay/p2p/all,默认两者都使用");
     println!("  --nic <tun0>        虚拟网卡名称,windows下使用tap模式则必须指定此参数");
 
     println!();
diff --git a/vnt-jni/src/config.rs b/vnt-jni/src/config.rs
index a0ce208..d71536a 100644
--- a/vnt-jni/src/config.rs
+++ b/vnt-jni/src/config.rs
@@ -6,6 +6,7 @@ use jni::objects::JObject;
 use jni::JNIEnv;
 
 use vnt::channel::punch::PunchModel;
+use vnt::channel::UseChannelType;
 use vnt::cipher::CipherModel;
 use vnt::core::Config;
 
@@ -25,7 +26,7 @@ pub fn new_config(env: &mut JNIEnv, config: JObject) -> Result<Config, Error> {
     let mtu = to_integer(env, &config, "mtu")?.map(|v| v as u32);
     let tcp = env.get_field(&config, "tcp", "Z")?.z()?;
     let server_encrypt = env.get_field(&config, "serverEncrypt", "Z")?.z()?;
-    let relay = env.get_field(&config, "relay", "Z")?.z()?;
+    let use_channel = to_string(env, &config, "useChannel")?;
     let finger = env.get_field(&config, "finger", "Z")?.z()?;
     let first_latency = env.get_field(&config, "firstLatency", "Z")?.z()?;
     let in_ips = to_string_array(env, &config, "inIps")?;
@@ -118,7 +119,6 @@ pub fn new_config(env: &mut JNIEnv, config: JObject) -> Result<Config, Error> {
         mtu,
         tcp,
         ip,
-        relay,
         false,
         server_encrypt,
         1,
@@ -131,6 +131,7 @@ pub fn new_config(env: &mut JNIEnv, config: JObject) -> Result<Config, Error> {
         device_name,
         #[cfg(target_os = "android")]
         device_fd,
+        UseChannelType::from_str(&use_channel.unwrap_or_default()).unwrap_or_default(),
     ) {
         Ok(config) => config,
         Err(e) => {
diff --git a/vnt/src/channel/context.rs b/vnt/src/channel/context.rs
index 29ffcc9..9a001ab 100644
--- a/vnt/src/channel/context.rs
+++ b/vnt/src/channel/context.rs
@@ -11,7 +11,7 @@ use parking_lot::RwLock;
 
 use crate::channel::punch::NatType;
 use crate::channel::sender::{AcceptSocketSender, ChannelSender, PacketSender};
-use crate::channel::{Route, RouteKey};
+use crate::channel::{Route, RouteKey, UseChannelType};
 use crate::handle::{ConnectStatus, CurrentDeviceInfo};
 
 /// 传输通道上下文，持有udp socket、tcp socket和路由信息
@@ -21,14 +21,19 @@ pub struct Context {
 }
 
 impl Context {
-    pub fn new(main_udp_socket: Vec<UdpSocket>, first_latency: bool, is_tcp: bool) -> Self {
+    pub fn new(
+        main_udp_socket: Vec<UdpSocket>,
+        use_channel_type: UseChannelType,
+        first_latency: bool,
+        is_tcp: bool,
+    ) -> Self {
         let channel_num = main_udp_socket.len();
         assert_ne!(channel_num, 0, "not channel");
         let inner = ContextInner {
             main_udp_socket,
             sub_udp_socket: RwLock::new(Vec::with_capacity(64)),
             tcp_map: RwLock::new(HashMap::with_capacity(64)),
-            route_table: RouteTable::new(first_latency, channel_num),
+            route_table: RouteTable::new(use_channel_type, first_latency, channel_num),
             is_tcp,
         };
         Self {
@@ -123,14 +128,14 @@ impl ContextInner {
         loop {
             let status = if self.route_table.route_one(&cur.virtual_gateway).is_some() {
                 //已连接
-                if cur.status == ConnectStatus::Connected {
+                if cur.status.online() {
                     return cur;
                 }
                 //状态变为已连接
                 ConnectStatus::Connected
             } else {
                 //未连接
-                if cur.status == ConnectStatus::Connecting {
+                if cur.status.offline() {
                     return cur;
                 }
                 //状态变为未连接
@@ -246,12 +251,14 @@ pub struct RouteTable {
         RwLock<HashMap<Ipv4Addr, (AtomicUsize, Vec<(Route, AtomicCell<Instant>)>)>>,
     first_latency: bool,
     channel_num: usize,
+    use_channel_type: UseChannelType,
 }
 
 impl RouteTable {
-    fn new(first_latency: bool, channel_num: usize) -> Self {
+    fn new(use_channel_type: UseChannelType, first_latency: bool, channel_num: usize) -> Self {
         Self {
             route_table: RwLock::new(HashMap::with_capacity(64)),
+            use_channel_type,
             first_latency,
             channel_num,
         }
@@ -295,6 +302,20 @@ impl RouteTable {
         self.add_route_(id, route, false)
     }
     fn add_route_(&self, id: Ipv4Addr, route: Route, only_if_absent: bool) {
+        // 限制通道类型
+        match self.use_channel_type {
+            UseChannelType::Relay => {
+                if route.metric < 2 {
+                    return;
+                }
+            }
+            UseChannelType::P2p => {
+                if route.metric != 1 {
+                    return;
+                }
+            }
+            UseChannelType::All => {}
+        }
         let key = route.route_key();
         let mut route_table = self.route_table.write();
         let (_, list) = route_table
diff --git a/vnt/src/channel/mod.rs b/vnt/src/channel/mod.rs
index a263ae4..2b06a07 100644
--- a/vnt/src/channel/mod.rs
+++ b/vnt/src/channel/mod.rs
@@ -1,5 +1,6 @@
 use std::io;
 use std::net::{SocketAddr, UdpSocket};
+use std::str::FromStr;
 use std::time::Duration;
 
 use crate::channel::context::Context;
@@ -19,7 +20,40 @@ pub mod tcp_channel;
 pub mod udp_channel;
 
 const BUFFER_SIZE: usize = 1024 * 16;
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+pub enum UseChannelType {
+    Relay,
+    P2p,
+    All,
+}
+impl UseChannelType {
+    pub fn is_only_relay(&self) -> bool {
+        self == &UseChannelType::Relay
+    }
+    pub fn is_only_p2p(&self) -> bool {
+        self == &UseChannelType::P2p
+    }
+    pub fn is_all(&self) -> bool {
+        self == &UseChannelType::All
+    }
+}
+impl FromStr for UseChannelType {
+    type Err = String;
 
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.to_lowercase().trim() {
+            "relay" => Ok(UseChannelType::Relay),
+            "p2p" => Ok(UseChannelType::P2p),
+            "all" => Ok(UseChannelType::All),
+            _ => Err(format!("not match '{}', enum: relay/p2p/all", s)),
+        }
+    }
+}
+impl Default for UseChannelType {
+    fn default() -> Self {
+        UseChannelType::All
+    }
+}
 #[derive(Copy, Clone, Eq, PartialEq)]
 pub enum Status {
     Cone,
@@ -104,6 +138,7 @@ impl RouteKey {
 
 pub fn init_context(
     ports: Vec<u16>,
+    use_channel_type: UseChannelType,
     first_latency: bool,
     is_tcp: bool,
 ) -> io::Result<(Context, mio::net::TcpListener)> {
@@ -123,7 +158,7 @@ pub fn init_context(
         main_channel.set_write_timeout(Some(Duration::from_secs(5)))?;
         udps.push(main_channel);
     }
-    let context = Context::new(udps, first_latency, is_tcp);
+    let context = Context::new(udps, use_channel_type, first_latency, is_tcp);
 
     let port = context.main_local_udp_port()?[0];
     //监听v6+v4双栈，tcp通道使用异步io
diff --git a/vnt/src/channel/punch.rs b/vnt/src/channel/punch.rs
index a0d2aaf..adf172d 100644
--- a/vnt/src/channel/punch.rs
+++ b/vnt/src/channel/punch.rs
@@ -24,7 +24,8 @@ impl FromStr for PunchModel {
         match s.to_lowercase().trim() {
             "ipv4" => Ok(PunchModel::IPv4),
             "ipv6" => Ok(PunchModel::IPv6),
-            _ => Ok(PunchModel::All),
+            "all" => Ok(PunchModel::All),
+            _ => Err(format!("not match '{}', enum: ipv4/ipv6/all", s)),
         }
     }
 }
diff --git a/vnt/src/core/conn.rs b/vnt/src/core/conn.rs
index 01cc1ad..9e1ddcb 100644
--- a/vnt/src/core/conn.rs
+++ b/vnt/src/core/conn.rs
@@ -15,7 +15,7 @@ use tun::device::IFace;
 use crate::channel::context::Context;
 use crate::channel::idle::Idle;
 use crate::channel::punch::{NatInfo, Punch};
-use crate::channel::{init_channel, init_context, Route, RouteKey};
+use crate::channel::{init_channel, init_context, Route, RouteKey, UseChannelType};
 use crate::cipher::Cipher;
 #[cfg(feature = "server_encrypt")]
 use crate::cipher::RsaCipher;
@@ -87,7 +87,12 @@ impl Vnt {
             }
         });
         //通道上下文
-        let (context, tcp_listener) = init_context(ports, config.first_latency, config.tcp)?;
+        let (context, tcp_listener) = init_context(
+            ports,
+            config.use_channel_type,
+            config.first_latency,
+            config.tcp,
+        )?;
         let local_ipv4 = nat::local_ipv4();
         let local_ipv6 = nat::local_ipv6();
         let udp_ports = context.main_local_udp_port()?;
@@ -143,7 +148,7 @@ impl Vnt {
             config_info.clone(),
             nat_test.clone(),
             callback.clone(),
-            config.relay,
+            config.use_channel_type,
             punch_sender,
             peer_nat_info_map.clone(),
             external_route.clone(),
@@ -192,8 +197,8 @@ impl Vnt {
             let nat_test = nat_test.clone();
             let device_list = device_list.clone();
             let current_device = current_device.clone();
-            let relay = config.relay;
-            if !relay {
+            let use_channel_type = config.use_channel_type;
+            if !use_channel_type.is_only_relay() {
                 // 定时nat探测
                 maintain::retrieve_nat_type(
                     &scheduler,
@@ -216,7 +221,7 @@ impl Vnt {
                     config_info,
                     punch,
                     callback,
-                    relay,
+                    use_channel_type,
                 );
             });
         }
@@ -247,7 +252,7 @@ pub fn start<Call: VntCallback>(
     config_info: BaseConfigInfo,
     punch: Punch,
     callback: Call,
-    relay: bool,
+    use_channel_type: UseChannelType,
 ) {
     // 定时心跳
     maintain::heartbeat(
@@ -284,7 +289,7 @@ pub fn start<Call: VntCallback>(
         server_cipher.clone(),
         config_info.clone(),
     );
-    if !relay {
+    if !use_channel_type.is_only_relay() {
         // 定时打洞
         maintain::punch(
             &scheduler,
diff --git a/vnt/src/core/mod.rs b/vnt/src/core/mod.rs
index 4f7b815..920d157 100644
--- a/vnt/src/core/mod.rs
+++ b/vnt/src/core/mod.rs
@@ -4,6 +4,7 @@ use std::net::{Ipv4Addr, SocketAddr};
 pub use conn::Vnt;
 
 use crate::channel::punch::PunchModel;
+use crate::channel::UseChannelType;
 use crate::cipher::CipherModel;
 
 mod conn;
@@ -24,7 +25,6 @@ pub struct Config {
     pub mtu: Option<u32>,
     pub tcp: bool,
     pub ip: Option<Ipv4Addr>,
-    pub relay: bool,
     #[cfg(feature = "ip_proxy")]
     pub no_proxy: bool,
     pub server_encrypt: bool,
@@ -38,6 +38,7 @@ pub struct Config {
     pub device_name: Option<String>,
     #[cfg(target_os = "android")]
     pub device_fd: i32,
+    pub use_channel_type: UseChannelType,
 }
 
 impl Config {
@@ -55,7 +56,6 @@ impl Config {
         mtu: Option<u32>,
         tcp: bool,
         ip: Option<Ipv4Addr>,
-        relay: bool,
         #[cfg(feature = "ip_proxy")] no_proxy: bool,
         server_encrypt: bool,
         parallel: usize,
@@ -66,6 +66,7 @@ impl Config {
         first_latency: bool,
         #[cfg(not(target_os = "android"))] device_name: Option<String>,
         #[cfg(target_os = "android")] device_fd: i32,
+        use_channel_type: UseChannelType,
     ) -> io::Result<Self> {
         for x in stun_server.iter_mut() {
             if !x.contains(":") {
@@ -96,7 +97,6 @@ impl Config {
             mtu,
             tcp,
             ip,
-            relay,
             #[cfg(feature = "ip_proxy")]
             no_proxy,
             server_encrypt,
@@ -110,6 +110,7 @@ impl Config {
             device_name,
             #[cfg(target_os = "android")]
             device_fd,
+            use_channel_type,
         })
     }
 }
diff --git a/vnt/src/handle/recv_data/client.rs b/vnt/src/handle/recv_data/client.rs
index 5470242..58cb730 100644
--- a/vnt/src/handle/recv_data/client.rs
+++ b/vnt/src/handle/recv_data/client.rs
@@ -15,7 +15,7 @@ use tun::Device;
 
 use crate::channel::context::Context;
 use crate::channel::punch::NatInfo;
-use crate::channel::{Route, RouteKey};
+use crate::channel::{Route, RouteKey, UseChannelType};
 use crate::cipher::Cipher;
 use crate::external_route::AllowExternalRoute;
 use crate::handle::recv_data::PacketHandler;
@@ -35,7 +35,7 @@ use crate::protocol::{
 pub struct ClientPacketHandler {
     device: Arc<Device>,
     client_cipher: Cipher,
-    relay: bool,
+    use_channel_type: UseChannelType,
     punch_sender: SyncSender<(Ipv4Addr, NatInfo)>,
     peer_nat_info_map: Arc<RwLock<HashMap<Ipv4Addr, NatInfo>>>,
     nat_test: NatTest,
@@ -48,7 +48,7 @@ impl ClientPacketHandler {
     pub fn new(
         device: Arc<Device>,
         client_cipher: Cipher,
-        relay: bool,
+        use_channel_type: UseChannelType,
         punch_sender: SyncSender<(Ipv4Addr, NatInfo)>,
         peer_nat_info_map: Arc<RwLock<HashMap<Ipv4Addr, NatInfo>>>,
         nat_test: NatTest,
@@ -58,7 +58,7 @@ impl ClientPacketHandler {
         Self {
             device,
             client_cipher,
-            relay,
+            use_channel_type,
             punch_sender,
             peer_nat_info_map,
             nat_test,
@@ -189,7 +189,7 @@ impl ClientPacketHandler {
                 context.route_table.add_route(source, route);
             }
             ControlPacket::PunchRequest => {
-                if self.relay {
+                if self.use_channel_type.is_only_relay() {
                     return Ok(());
                 }
                 //回应
@@ -203,7 +203,7 @@ impl ClientPacketHandler {
                 context.route_table.add_route_if_absent(source, route);
             }
             ControlPacket::PunchResponse => {
-                if self.relay {
+                if self.use_channel_type.is_only_relay() {
                     return Ok(());
                 }
                 let route = Route::from(route_key, 1, 199);
@@ -237,7 +237,7 @@ impl ClientPacketHandler {
         net_packet: NetPacket<&mut [u8]>,
         route_key: RouteKey,
     ) -> io::Result<()> {
-        if self.relay {
+        if self.use_channel_type.is_only_relay() {
             return Ok(());
         }
         let source = net_packet.source();
diff --git a/vnt/src/handle/recv_data/mod.rs b/vnt/src/handle/recv_data/mod.rs
index 13a9c90..5040ad6 100644
--- a/vnt/src/handle/recv_data/mod.rs
+++ b/vnt/src/handle/recv_data/mod.rs
@@ -12,7 +12,7 @@ use tun::Device;
 use crate::channel::context::Context;
 use crate::channel::handler::RecvChannelHandler;
 use crate::channel::punch::NatInfo;
-use crate::channel::RouteKey;
+use crate::channel::{RouteKey, UseChannelType};
 use crate::cipher::Cipher;
 #[cfg(feature = "server_encrypt")]
 use crate::cipher::RsaCipher;
@@ -60,7 +60,7 @@ impl<Call: VntCallback> RecvDataHandler<Call> {
         config_info: BaseConfigInfo,
         nat_test: NatTest,
         callback: Call,
-        relay: bool,
+        use_channel_type: UseChannelType,
         punch_sender: SyncSender<(Ipv4Addr, NatInfo)>,
         peer_nat_info_map: Arc<RwLock<HashMap<Ipv4Addr, NatInfo>>>,
         external_route: ExternalRoute,
@@ -83,7 +83,7 @@ impl<Call: VntCallback> RecvDataHandler<Call> {
         let client = ClientPacketHandler::new(
             device.clone(),
             client_cipher,
-            relay,
+            use_channel_type,
             punch_sender,
             peer_nat_info_map,
             nat_test,