diff --git a/packages/client-v2/src/app/client/mod.rs b/packages/client-v2/src/app/client/mod.rs
index 20a08a4..d08f621 100644
--- a/packages/client-v2/src/app/client/mod.rs
+++ b/packages/client-v2/src/app/client/mod.rs
@@ -279,6 +279,7 @@ impl Client {
                 println!("[Client] Starting playback...");
                 let handle = PlaybackPipeline::spawn(
                     config,
+                    session.clock.clone(),
                     session.audio_socket.clone(),
                     session.cancel.clone(),
                 );
diff --git a/packages/client-v2/src/app/client/pipeline.rs b/packages/client-v2/src/app/client/pipeline.rs
index 7056dd7..fcd4ea6 100644
--- a/packages/client-v2/src/app/client/pipeline.rs
+++ b/packages/client-v2/src/app/client/pipeline.rs
@@ -22,13 +22,12 @@ use crate::audio::codec::OpusCodec;
 use crate::audio::config::AudioConfig;
 use crate::audio::player::AudioPlayer;
 use crate::audio::recorder::AudioRecorder;
+use crate::net::jitter_buffer::{JitterBuffer, JitterConfig};
 use crate::net::network::AudioSocket;
 use crate::net::protocol::AudioPacket;
 use crate::net::sync::now_us;
-use std::collections::VecDeque;
 use std::net::SocketAddr;
 use std::sync::Arc;
-use std::sync::atomic::{AtomicBool, Ordering};
 use std::time::Duration;
 use tokio::sync::mpsc;
 use tokio_util::sync::CancellationToken;
@@ -36,18 +35,15 @@ use tokio_util::sync::CancellationToken;
 /// 管道句柄 - 用于控制正在运行的音频管道
 pub struct PipelineHandle {
     cancel: CancellationToken,
-    /// 用于通知阻塞线程停止
-    stop_flag: Arc<AtomicBool>,
 }
 
 impl PipelineHandle {
-    fn new(cancel: CancellationToken, stop_flag: Arc<AtomicBool>) -> Self {
-        Self { cancel, stop_flag }
+    fn new(cancel: CancellationToken) -> Self {
+        Self { cancel }
     }
 
     /// 停止管道
     pub fn stop(&self) {
-        self.stop_flag.store(true, Ordering::SeqCst);
         self.cancel.cancel();
     }
 
@@ -82,13 +78,12 @@ impl RecordPipeline {
         parent_cancel: CancellationToken,
     ) -> PipelineHandle {
         let cancel = parent_cancel.child_token();
-        let stop_flag = Arc::new(AtomicBool::new(false));
-        let handle = PipelineHandle::new(cancel.clone(), stop_flag.clone());
+        let handle = PipelineHandle::new(cancel.clone());
 
         let token = cancel.clone();
 
         tokio::spawn(async move {
-            if let Err(e) = Self::run(config, socket, target, token, stop_flag).await {
+            if let Err(e) = Self::run(config, socket, target, token).await {
                 eprintln!("[RecordPipeline] Error: {}", e);
             }
         });
@@ -101,15 +96,13 @@ impl RecordPipeline {
         socket: Arc<AudioSocket>,
         target: SocketAddr,
         cancel: CancellationToken,
-        stop_flag: Arc<AtomicBool>,
     ) -> anyhow::Result<()> {
         // 创建 PCM 数据通道
         let (pcm_tx, mut pcm_rx) = mpsc::channel::<Vec<i16>>(32);
 
         // 启动 ALSA 录音线程（阻塞 I/O）
         let recorder_config = config.clone();
-        let recorder_stop = stop_flag.clone();
-
+        let channels = recorder_config.channels as usize;
         std::thread::spawn(move || {
             let recorder = match AudioRecorder::new(&recorder_config) {
                 Ok(r) => r,
@@ -119,13 +112,17 @@ impl RecordPipeline {
                 }
             };
 
-            let mut buf = vec![0i16; recorder_config.frame_size];
+            let mut buf =
+                vec![0i16; recorder_config.frame_size * recorder_config.channels as usize];
 
-            // 使用 stop_flag 来优雅退出
-            while !recorder_stop.load(Ordering::SeqCst) {
+            loop {
                 match recorder.read(&mut buf) {
                     Ok(n) if n > 0 => {
-                        if pcm_tx.blocking_send(buf[..n].to_vec()).is_err() {
+                        let actual_samples = n * channels;
+                        if pcm_tx
+                            .blocking_send(buf[..actual_samples].to_vec())
+                            .is_err()
+                        {
                             break;
                         }
                     }
@@ -153,11 +150,11 @@ impl RecordPipeline {
                 pcm = pcm_rx.recv() => {
                     match pcm {
                         Some(samples) => {
-                            if let Ok(len) = codec.encode(&samples, &mut opus_buf) {
+                            if let Ok(encoded_len) = codec.encode(&samples, &mut opus_buf) {
                                 let packet = AudioPacket {
                                     seq: 0,
                                     timestamp: 0,
-                                    data: opus_buf[..len].to_vec(),
+                                    data: opus_buf[..encoded_len].to_vec(),
                                 };
                                 let _ = socket.send(&packet, target).await;
                             }
@@ -189,17 +186,17 @@ impl PlaybackPipeline {
     /// * `parent_cancel` - 父级取消令牌
     pub fn spawn(
         config: AudioConfig,
+        clock: Arc<parking_lot::Mutex<crate::net::sync::ClockSync>>,
         socket: Arc<AudioSocket>,
         parent_cancel: CancellationToken,
     ) -> PipelineHandle {
         let cancel = parent_cancel.child_token();
-        let stop_flag = Arc::new(AtomicBool::new(false));
-        let handle = PipelineHandle::new(cancel.clone(), stop_flag.clone());
+        let handle = PipelineHandle::new(cancel.clone());
 
         let token = cancel.clone();
 
         tokio::spawn(async move {
-            if let Err(e) = Self::run(config, socket, token, stop_flag).await {
+            if let Err(e) = Self::run(config, clock, socket, token).await {
                 eprintln!("[PlaybackPipeline] Error: {}", e);
             }
         });
@@ -209,91 +206,72 @@ impl PlaybackPipeline {
 
     async fn run(
         config: AudioConfig,
+        clock: Arc<parking_lot::Mutex<crate::net::sync::ClockSync>>,
         socket: Arc<AudioSocket>,
         cancel: CancellationToken,
-        stop_flag: Arc<AtomicBool>,
     ) -> anyhow::Result<()> {
-        // 创建 PCM 数据通道
-        let (pcm_tx, pcm_rx) = mpsc::channel::<AudioPacket>(128);
+        // 1. 创建 PCM 通道
+        let (pcm_tx, mut pcm_rx) = mpsc::channel::<Vec<i16>>(64);
 
-        // 启动 ALSA 播放线程（阻塞 I/O）
+        // 2. 专用播放线程
         let player_config = config.clone();
-        let player_stop = stop_flag.clone();
+        std::thread::spawn(move || {
+            let player = match AudioPlayer::new(&player_config) {
+                Ok(p) => p,
+                Err(e) => return eprintln!("[PlaybackPipeline] Player init error: {}", e),
+            };
 
-        println!("[PlaybackPipeline] Started");
-
-        // 主循环：从 UDP 接收，解码后发送给播放线程
-        let mut udp_buf = vec![0u8; 4096];
-        let mut last_time = now_us();
-        tokio::spawn(async move {
-            loop {
-                match socket.recv(&mut udp_buf).await {
-                    Ok((packet, _src)) => {
-                        let now = now_us();
-                        let diff = now - last_time;
-                        println!("Received packet now:{} diff:{}ms", now, diff / 1000);
-                        last_time = now;
-
-                        if let Err(e) = pcm_tx.send(packet).await {
-                            eprintln!("[PlaybackPipeline] PCM channel send error: {}", e);
-                            break;
-                        }
-                    }
-                    Err(e) => {
-                        eprintln!("[PlaybackPipeline] Recv error: {}", e);
-                    }
+            // 当 pcm_tx 在异步任务中被 drop，这里会自动退出
+            while let Some(samples) = pcm_rx.blocking_recv() {
+                if let Err(e) = player.write(&samples) {
+                    eprintln!("[PlaybackPipeline] Write error: {}", e);
+                    break;
                 }
             }
+            println!("[PlaybackPipeline] Player thread exited naturally");
         });
 
-        let player = match AudioPlayer::new(&player_config) {
-            Ok(p) => p,
-            Err(e) => {
-                eprintln!("[PlaybackPipeline] Failed to create player: {}", e);
-                return Err(e);
-            }
-        };
+        // 3. Opus 解码器与 Jitter Buffer
+        let mut codec = OpusCodec::new(&config)?;
+        let mut jitter_buffer = JitterBuffer::new(JitterConfig::default());
+        let mut pcm_frame = vec![0i16; config.frame_size * config.channels as usize];
 
-        // 使用 blocking_recv 在线程中接收
-        let mut rx = pcm_rx;
-        // 创建 Opus 解码器
-        let mut codec = OpusCodec::new(&config).unwrap();
-        let mut pcm_buf = vec![0i16; config.frame_size * config.channels as usize];
+        // 提高定时精度
+        let mut ticker = tokio::time::interval(std::time::Duration::from_millis(5));
+        ticker.set_missed_tick_behavior(tokio::time::MissedTickBehavior::Delay);
 
-        let mut jitter_buffer: VecDeque<AudioPacket> = VecDeque::new();
+        println!("[PlaybackPipeline] Running");
 
-        let mut start_time = 0u128;
-        let frame_duration_us =
-            (config.frame_size as f64 / config.sample_rate as f64 * 1_000_000.0) as u128;
-
-        while !player_stop.load(Ordering::SeqCst) {
-            while let Ok(p) = rx.try_recv() {
-                jitter_buffer.push_back(p);
-            }
-            if let Some(pck) = jitter_buffer.front() {
-                let now = now_us();
-                if start_time == 0 {
-                    start_time = now;
+        // 4. 主逻辑循环
+        // 使用 loop + select，当 cancel 触发时直接 break
+        let mut udp_buf = vec![0u8; 4096];
+        loop {
+            tokio::select! {
+                // 优先级 1: 外部取消
+                _ = cancel.cancelled() => {
+                    break;
                 }
 
-                let target_client_time = start_time + (pck.seq as u128) * frame_duration_us;
+                // 优先级 2: 网络接收
+                result = socket.recv(&mut udp_buf) => {
+                    if let Ok((packet,_)) = result {
+                        let arrival_time = clock.lock().to_server_time(now_us());
+                        jitter_buffer.push(packet, arrival_time);
+                    }
+                }
 
-                if now >= target_client_time {
-                    let packet = jitter_buffer.pop_front().unwrap();
-                    let samples = codec.decode(&packet.data, &mut pcm_buf)?;
-                    player.write(&pcm_buf[..samples * config.channels as usize])?;
-                } else if target_client_time - now > 500_000 {
-                    // Too far in the future, maybe clock jumped?
-                    jitter_buffer.pop_front();
-                } else {
-                    // Wait until it's time
-                    let wait = (target_client_time - now) as u64;
-                    if wait > 1000 {
-                        tokio::time::sleep(Duration::from_micros(wait)).await;
+                // 优先级 3: 播放调度
+                _ = ticker.tick() => {
+                    let current_time = clock.lock().to_server_time(now_us());
+                    while let Some(packet) = jitter_buffer.pop(current_time) {
+                        if let Ok(samples) = codec.decode(&packet.data, &mut pcm_frame) {
+                            let samples = pcm_frame[..samples * config.channels as usize].to_vec();
+                            if pcm_tx.try_send(samples).is_err() {
+                                break;
+                            }
+                        }
                     }
                 }
-            } else {
-                tokio::time::sleep(Duration::from_millis(5)).await;
             }
         }
 
diff --git a/packages/client-v2/src/app/server/stream.rs b/packages/client-v2/src/app/server/stream.rs
index 1284171..54aba20 100644
--- a/packages/client-v2/src/app/server/stream.rs
+++ b/packages/client-v2/src/app/server/stream.rs
@@ -78,7 +78,7 @@ pub struct StreamSender {
     // 配置参数
     input_len: usize,
     frame_duration_us: u128,
-    max_lead_us: u128, // 允许的最大超前时间，例如 1_000_000 (1s)
+    max_lead_us: u128, // 允许的最大超前时间，例如 500_000 (1s)
 }
 
 impl StreamSender {
@@ -105,7 +105,7 @@ impl StreamSender {
             stream_start_ts: None,
             input_len,
             frame_duration_us,
-            max_lead_us: 1_000_000,
+            max_lead_us: 500_000,
         })
     }
 
@@ -259,7 +259,7 @@ impl RecorderStream {
     ) -> anyhow::Result<()> {
         let mut writer = WavWriter::create(&filename, config.sample_rate, config.channels)?;
         let mut codec = OpusCodec::new(&config)?;
-        let mut pcm = vec![0i16; config.frame_size];
+        let mut pcm = vec![0i16; config.frame_size * config.channels as usize];
 
         println!(
             "[Recorder] Started -> {} (filter: {:?})",
@@ -280,8 +280,9 @@ impl RecorderStream {
                             }
 
                             // 解码并写入
-                            if let Ok(n) = codec.decode(&frame.packet.data, &mut pcm) {
-                                let _ = writer.write_samples(&pcm[..n]);
+                            if let Ok(samples_per_channel) = codec.decode(&frame.packet.data, &mut pcm) {
+                                let total_samples = samples_per_channel * config.channels as usize;
+                                let _ = writer.write_samples(&pcm[..total_samples])?;
                             }
                         }
                         Err(broadcast::error::RecvError::Lagged(n)) => {
diff --git a/packages/client-v2/src/bin/server.rs b/packages/client-v2/src/bin/server.rs
index e9de390..d0a9cfe 100644
--- a/packages/client-v2/src/bin/server.rs
+++ b/packages/client-v2/src/bin/server.rs
@@ -103,13 +103,25 @@ async fn main() -> anyhow::Result<()> {
             .await;
         println!("   ✅ Event broadcasted");
 
+        // 5. 测试音频录制
+        println!("\n5️⃣  Testing Audio Recording (10 seconds)...");
+        match server.start_record(addr, AudioConfig::voice_16k()).await {
+            Ok(_) => {
+                println!("   ⏺️  Recording started...");
+                tokio::time::sleep(std::time::Duration::from_secs(10)).await;
+                server.stop_record(addr).await?;
+                println!("   ⏹️  Recording stopped");
+            }
+            Err(e) => println!("   ❌ Recording failed: {}", e),
+        }
+
         // 6. 测试音频播放（如果有测试文件）
         println!("\n6️⃣  Testing Audio Playback...");
         if std::path::Path::new("temp/test.wav").exists() {
             match server.start_play(addr, "temp/test.wav").await {
                 Ok(_) => {
                     println!("   ▶️  Playback started...");
-                    tokio::time::sleep(std::time::Duration::from_secs(60)).await;
+                    tokio::time::sleep(std::time::Duration::from_secs(10)).await;
                     server.stop_play(addr).await?;
                     println!("   ⏹️  Playback stopped");
                 }
@@ -119,18 +131,6 @@ async fn main() -> anyhow::Result<()> {
             println!("   ⚠️  No test file found at temp/test.wav, skipping...");
         }
 
-        // 5. 测试音频录制
-        println!("\n5️⃣  Testing Audio Recording (5 seconds)...");
-        match server.start_record(addr, AudioConfig::voice_16k()).await {
-            Ok(_) => {
-                println!("   ⏺️  Recording started...");
-                tokio::time::sleep(std::time::Duration::from_secs(5)).await;
-                server.stop_record(addr).await?;
-                println!("   ⏹️  Recording stopped");
-            }
-            Err(e) => println!("   ❌ Recording failed: {}", e),
-        }
-
         println!("\n═══════════════════════════════════════════════════════");
         println!("✅ All tests completed!");
         println!("\nServer status:");
diff --git a/packages/client-v2/src/net/jitter_buffer.rs b/packages/client-v2/src/net/jitter_buffer.rs
new file mode 100644
index 0000000..ece9a09
--- /dev/null
+++ b/packages/client-v2/src/net/jitter_buffer.rs
@@ -0,0 +1,334 @@
+//! # Jitter Buffer - 抖动缓冲区
+//!
+//! 用于音频流的抖动缓冲和包重排序。
+//!
+//! ## 功能
+//! - 自适应缓冲区大小
+//! - 乱序包重排
+//! - 丢包检测和统计
+//! - 延迟统计
+
+use crate::net::protocol::AudioPacket;
+use std::cmp::Ordering;
+use std::collections::{BTreeMap, VecDeque};
+
+impl PartialEq for AudioPacket {
+    fn eq(&self, other: &Self) -> bool {
+        self.timestamp == other.timestamp
+    }
+}
+impl Eq for AudioPacket {}
+impl Ord for AudioPacket {
+    fn cmp(&self, other: &Self) -> Ordering {
+        other.timestamp.cmp(&self.timestamp)
+    }
+}
+impl PartialOrd for AudioPacket {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+/// Jitter Buffer 统计信息
+#[derive(Debug, Clone, Default)]
+pub struct JitterStats {
+    /// 总接收包数
+    pub received: u64,
+    /// 总丢包数
+    pub lost: u64,
+    /// 总播放包数
+    pub played: u64,
+    /// 迟到的包数（到达时已过播放时间）
+    pub late: u64,
+    /// 重复包数
+    pub duplicate: u64,
+    /// 当前缓冲区大小（包数）
+    pub buffer_size: usize,
+    /// 最小延迟（微秒）
+    pub min_delay: u128,
+    /// 最大延迟（微秒）
+    pub max_delay: u128,
+    /// 平均延迟（微秒）
+    pub avg_delay: u128,
+}
+
+impl JitterStats {
+    /// 计算丢包率（百分比）
+    pub fn loss_rate(&self) -> f64 {
+        if self.received + self.lost == 0 {
+            return 0.0;
+        }
+        (self.lost as f64 / (self.received + self.lost) as f64) * 100.0
+    }
+}
+
+/// Jitter Buffer 配置
+#[derive(Debug, Clone)]
+pub struct JitterConfig {
+    /// 最小缓冲区大小（包数）
+    pub min_buffer_size: usize,
+    /// 最大缓冲区大小（包数）
+    pub max_buffer_size: usize,
+    /// 目标缓冲区大小（包数）
+    pub target_buffer_size: usize,
+    /// 自适应调整间隔（包数）
+    pub adapt_interval: usize,
+    /// 最大容忍延迟（微秒）
+    pub max_tolerable_delay: u128,
+}
+
+impl Default for JitterConfig {
+    fn default() -> Self {
+        Self {
+            min_buffer_size: 2,
+            max_buffer_size: 20,
+            target_buffer_size: 5,
+            adapt_interval: 50,
+            max_tolerable_delay: 100_000, // 100ms
+        }
+    }
+}
+
+/// Jitter Buffer - 用于音频流的抖动缓冲
+pub struct JitterBuffer {
+    /// 配置
+    config: JitterConfig,
+    /// 缓冲区（按时间戳排序）
+    buffer: BTreeMap<u128, AudioPacket>,
+    /// 统计信息
+    stats: JitterStats,
+    /// 期望的下一个序列号
+    expected_seq: u32,
+    /// 是否已接收第一个包
+    first_packet_received: bool,
+    /// 延迟样本窗口（用于自适应）
+    delay_samples: VecDeque<u128>,
+    /// 自适应计数器
+    adapt_counter: usize,
+    /// 上次播放的时间戳
+    last_played_timestamp: u128,
+}
+
+impl JitterBuffer {
+    /// 创建新的 Jitter Buffer
+    pub fn new(config: JitterConfig) -> Self {
+        Self {
+            config,
+            buffer: BTreeMap::new(),
+            stats: JitterStats::default(),
+            expected_seq: 0,
+            first_packet_received: false,
+            delay_samples: VecDeque::with_capacity(100),
+            adapt_counter: 0,
+            last_played_timestamp: 0,
+        }
+    }
+
+    /// 使用默认配置创建
+    pub fn default() -> Self {
+        Self::new(JitterConfig::default())
+    }
+
+    /// 插入音频包
+    pub fn push(&mut self, packet: AudioPacket, arrival_time: u128) {
+        // 检测重复包
+        if self.buffer.contains_key(&packet.timestamp) {
+            self.stats.duplicate += 1;
+            return;
+        }
+
+        // 初始化序列号
+        if !self.first_packet_received {
+            self.expected_seq = packet.seq.wrapping_add(1);
+            self.first_packet_received = true;
+        } else {
+            // 检测丢包
+            let seq_diff = packet.seq.wrapping_sub(self.expected_seq);
+            if seq_diff > 0 && seq_diff < 1000 {
+                // 允许一定的序列号跳跃（处理回环）
+                self.stats.lost += seq_diff as u64;
+            }
+            self.expected_seq = packet.seq.wrapping_add(1);
+        }
+
+        // 检查是否迟到
+        if self.last_played_timestamp > 0 && packet.timestamp < self.last_played_timestamp {
+            self.stats.late += 1;
+            return;
+        }
+
+        // 超过最大容忍延迟，直接丢弃
+        if packet.timestamp < arrival_time
+            && arrival_time - packet.timestamp > self.config.max_tolerable_delay
+        {
+            self.stats.late += 1;
+            return;
+        }
+
+        let delay = if packet.timestamp >= arrival_time {
+            packet.timestamp - arrival_time
+        } else {
+            0 // 包到达时已经过了播放时间
+        };
+
+        self.update_delay_stats(delay);
+
+        // 插入缓冲区
+        self.buffer.insert(packet.timestamp, packet);
+        self.stats.received += 1;
+        self.stats.buffer_size = self.buffer.len();
+
+        // 自适应调整
+        self.adapt_counter += 1;
+        if self.adapt_counter >= self.config.adapt_interval {
+            self.adapt_buffer_size();
+            self.adapt_counter = 0;
+        }
+    }
+
+    /// 获取下一个应该播放的包
+    ///
+    /// # Arguments
+    /// * `current_time` - 当前服务器时间
+    ///
+    /// # Returns
+    /// * `Some(packet)` - 如果有包应该播放
+    /// * `None` - 如果缓冲区为空或还没到播放时间
+    pub fn pop(&mut self, current_time: u128) -> Option<AudioPacket> {
+        // 如果缓冲区为空，直接返回
+        if self.buffer.is_empty() {
+            return None;
+        }
+
+        // 检查缓冲区是否达到最小大小
+        if self.buffer.len() < self.config.target_buffer_size && !self.should_drain() {
+            return None;
+        }
+
+        // 获取最早的包
+        if let Some((&timestamp, _)) = self.buffer.iter().next() {
+            // 检查是否到达播放时间
+            if current_time >= timestamp {
+                let packet = self.buffer.remove(&timestamp).unwrap();
+                self.last_played_timestamp = timestamp;
+                self.stats.played += 1;
+                self.stats.buffer_size = self.buffer.len();
+                return Some(packet);
+            }
+        }
+
+        None
+    }
+
+    /// 强制获取下一个包（无论时间）
+    pub fn pop_next(&mut self) -> Option<AudioPacket> {
+        if let Some((&timestamp, _)) = self.buffer.iter().next() {
+            let packet = self.buffer.remove(&timestamp).unwrap();
+            self.last_played_timestamp = timestamp;
+            self.stats.played += 1;
+            self.stats.buffer_size = self.buffer.len();
+            return Some(packet);
+        }
+        None
+    }
+
+    /// 查看下一个包的播放时间（不移除）
+    pub fn peek_next_timestamp(&self) -> Option<u128> {
+        self.buffer.keys().next().copied()
+    }
+
+    /// 获取缓冲区大小
+    pub fn len(&self) -> usize {
+        self.buffer.len()
+    }
+
+    /// 检查缓冲区是否为空
+    pub fn is_empty(&self) -> bool {
+        self.buffer.is_empty()
+    }
+
+    /// 获取统计信息
+    pub fn stats(&self) -> &JitterStats {
+        &self.stats
+    }
+
+    /// 重置统计信息
+    pub fn reset_stats(&mut self) {
+        self.stats = JitterStats::default();
+        self.stats.buffer_size = self.buffer.len();
+    }
+
+    /// 清空缓冲区
+    pub fn clear(&mut self) {
+        self.buffer.clear();
+        self.stats.buffer_size = 0;
+        self.first_packet_received = false;
+        self.last_played_timestamp = 0;
+    }
+
+    /// 检查是否应该排空缓冲区（处理长时间没有新包的情况）
+    fn should_drain(&self) -> bool {
+        // 如果缓冲区有包且已经等了很久，就开始播放
+        !self.buffer.is_empty() && self.buffer.len() >= self.config.min_buffer_size
+    }
+
+    /// 更新延迟统计
+    fn update_delay_stats(&mut self, delay: u128) {
+        // 更新最小/最大延迟
+        if self.stats.received == 0 {
+            self.stats.min_delay = delay;
+            self.stats.max_delay = delay;
+            self.stats.avg_delay = delay;
+        } else {
+            self.stats.min_delay = self.stats.min_delay.min(delay);
+            self.stats.max_delay = self.stats.max_delay.max(delay);
+            // 滑动平均
+            self.stats.avg_delay = (self.stats.avg_delay * 9 + delay) / 10;
+        }
+
+        // 保存延迟样本用于自适应
+        self.delay_samples.push_back(delay);
+        if self.delay_samples.len() > 100 {
+            self.delay_samples.pop_front();
+        }
+    }
+
+    /// 自适应调整缓冲区大小
+    fn adapt_buffer_size(&mut self) {
+        if self.delay_samples.len() < 10 {
+            return;
+        }
+
+        // 计算延迟方差（抖动）
+        let avg = self.stats.avg_delay;
+        let variance: f64 = self
+            .delay_samples
+            .iter()
+            .map(|&d| {
+                let diff = d as i128 - avg as i128;
+                (diff * diff) as f64
+            })
+            .sum::<f64>()
+            / self.delay_samples.len() as f64;
+
+        let jitter = variance.sqrt();
+
+        // 根据抖动调整目标缓冲区大小
+        // 抖动大 -> 增加缓冲区
+        // 抖动小 -> 减少缓冲区
+        let target = if jitter > 50_000.0 {
+            // 高抖动（>50ms 标准差）
+            self.config.target_buffer_size + 2
+        } else if jitter < 10_000.0 {
+            // 低抖动（<10ms 标准差）
+            self.config.target_buffer_size.saturating_sub(1)
+        } else {
+            self.config.target_buffer_size
+        };
+
+        // 限制在最小/最大范围内
+        self.config.target_buffer_size = target
+            .max(self.config.min_buffer_size)
+            .min(self.config.max_buffer_size);
+    }
+}
diff --git a/packages/client-v2/src/net/mod.rs b/packages/client-v2/src/net/mod.rs
index 5f4f8d5..0674a96 100644
--- a/packages/client-v2/src/net/mod.rs
+++ b/packages/client-v2/src/net/mod.rs
@@ -7,10 +7,13 @@
 //! - `network` - 底层网络连接
 //! - `protocol` - 通信协议定义
 //! - `rpc` - RPC 调用管理
+//! - `sync` - 时间同步工具
+//! - `jitter_buffer` - 抖动缓冲区实现
 
 pub mod command;
 pub mod discovery;
 pub mod event;
+pub mod jitter_buffer;
 pub mod network;
 pub mod protocol;
 pub mod rpc;