diff --git a/AxibugEmuOnline.Client/Assets/Plugins/AxiReplay/NetReplay.cs b/AxibugEmuOnline.Client/Assets/Plugins/AxiReplay/NetReplay.cs
index e5c98b0..777a284 100644
--- a/AxibugEmuOnline.Client/Assets/Plugins/AxiReplay/NetReplay.cs
+++ b/AxibugEmuOnline.Client/Assets/Plugins/AxiReplay/NetReplay.cs
@@ -5,7 +5,7 @@ namespace AxiReplay
     public class NetReplay
     {
         int MaxInFrame = 0;
-        int mCurrPlayFrame = -1;
+        public int mCurrPlayFrame = -1;
         Queue<ReplayStep> mQueueReplay;
         ReplayStep mNextReplay;
         ReplayStep mCurrReplay;
diff --git a/AxibugEmuOnline.Client/Assets/Script/Event/EventSystem.cs b/AxibugEmuOnline.Client/Assets/Script/Event/EventSystem.cs
index c742461..da07fda 100644
--- a/AxibugEmuOnline.Client/Assets/Script/Event/EventSystem.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/Event/EventSystem.cs
@@ -29,14 +29,14 @@ namespace AxibugEmuOnline.Client.Event
         }
     }
 
-    public class EventSystem
+    public class Eventer
     {
-        private static EventSystem instance = new EventSystem();
-        public static EventSystem Instance { get { return instance; } }
+        private static Eventer instance = new Eventer();
+        public static Eventer Instance { get { return instance; } }
 
         private Dictionary<EEvent, List<Delegate>> eventDic = new Dictionary<EEvent, List<Delegate>>(128);
 
-        private EventSystem() { }
+        private Eventer() { }
 
 
         #region RegisterEvent
diff --git a/AxibugEmuOnline.Client/Assets/Script/Manager/AppChat.cs b/AxibugEmuOnline.Client/Assets/Script/Manager/AppChat.cs
index 4ab2e28..c3b2634 100644
--- a/AxibugEmuOnline.Client/Assets/Script/Manager/AppChat.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/Manager/AppChat.cs
@@ -26,7 +26,7 @@ namespace AxibugEmuOnline.Client.Manager
         public void RecvChatMsg(byte[] reqData)
         {
             Protobuf_ChatMsg_RESP msg = ProtoBufHelper.DeSerizlize<Protobuf_ChatMsg_RESP>(reqData);
-            EventSystem.Instance.PostEvent(EEvent.OnChatMsg, msg.NickName, msg.ChatMsg);
+            Eventer.Instance.PostEvent(EEvent.OnChatMsg, msg.NickName, msg.ChatMsg);
         }
     }
 }
diff --git a/AxibugEmuOnline.Client/Assets/Script/Manager/AppRoom.cs b/AxibugEmuOnline.Client/Assets/Script/Manager/AppRoom.cs
index e737cb6..6146e66 100644
--- a/AxibugEmuOnline.Client/Assets/Script/Manager/AppRoom.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/Manager/AppRoom.cs
@@ -5,9 +5,9 @@ using AxibugEmuOnline.Client.Network;
 using AxibugProtobuf;
 using AxiReplay;
 using Google.Protobuf;
+using System;
 using System.Collections.Generic;
 using System.Linq;
-using UnityEngine;
 
 namespace AxibugEmuOnline.Client.Manager
 {
@@ -182,7 +182,7 @@ namespace AxibugEmuOnline.Client.Manager
             Protobuf_Room_List_RESP msg = ProtoBufHelper.DeSerizlize<Protobuf_Room_List_RESP>(reqData);
             for (int i = 0; i < msg.RoomMiniInfoList.Count; i++)
                 AddOrUpdateRoomList(msg.RoomMiniInfoList[i]);
-            EventSystem.Instance.PostEvent(EEvent.OnRoomListAllUpdate);
+            Eventer.Instance.PostEvent(EEvent.OnRoomListAllUpdate);
         }
 
         /// <summary>
@@ -194,7 +194,7 @@ namespace AxibugEmuOnline.Client.Manager
             App.log.Debug("单个房间状态更新");
             Protobuf_Room_Update_RESP msg = ProtoBufHelper.DeSerizlize<Protobuf_Room_Update_RESP>(reqData);
             AddOrUpdateRoomList(msg.RoomMiniInfo);
-            EventSystem.Instance.PostEvent(EEvent.OnRoomListSingleUpdate, msg.RoomMiniInfo.GameRomID);
+            Eventer.Instance.PostEvent(EEvent.OnRoomListSingleUpdate, msg.RoomMiniInfo.GameRomID);
         }
 
         /// <summary>
@@ -247,7 +247,7 @@ namespace AxibugEmuOnline.Client.Manager
             Protobuf_Room_Join_RESP msg = ProtoBufHelper.DeSerizlize<Protobuf_Room_Join_RESP>(reqData);
             mineRoomMiniInfo = msg.RoomMiniInfo;
             InitRePlay();
-            EventSystem.Instance.PostEvent(EEvent.OnMineJoinRoom);
+            Eventer.Instance.PostEvent(EEvent.OnMineJoinRoom);
         }
 
         /// <summary>
@@ -273,7 +273,7 @@ namespace AxibugEmuOnline.Client.Manager
             Protobuf_Room_Leave_RESP msg = ProtoBufHelper.DeSerizlize<Protobuf_Room_Leave_RESP>(reqData);
             ReleaseRePlay();
             mineRoomMiniInfo = null;
-            EventSystem.Instance.PostEvent(EEvent.OnMineLeavnRoom);
+            Eventer.Instance.PostEvent(EEvent.OnMineLeavnRoom);
         }
 
         void RecvRoomMyRoomStateChange(byte[] reqData)
@@ -291,12 +291,12 @@ namespace AxibugEmuOnline.Client.Manager
                 //位置之前有人，但是离开了
                 if (OldPlayer > 0)
                 {
-                    EventSystem.Instance.PostEvent(EEvent.OnOtherPlayerLeavnRoom, i, OldPlayer);
+                    Eventer.Instance.PostEvent(EEvent.OnOtherPlayerLeavnRoom, i, OldPlayer);
                     if (NewPlayer > 0)//而且害换了一个玩家
-                        EventSystem.Instance.PostEvent(EEvent.OnOtherPlayerJoinRoom, i, NewPlayer);
+                        Eventer.Instance.PostEvent(EEvent.OnOtherPlayerJoinRoom, i, NewPlayer);
                 }
                 else //之前没人
-                    EventSystem.Instance.PostEvent(EEvent.OnOtherPlayerJoinRoom, i, NewPlayer);
+                    Eventer.Instance.PostEvent(EEvent.OnOtherPlayerJoinRoom, i, NewPlayer);
             }
         }
 
@@ -322,7 +322,7 @@ namespace AxibugEmuOnline.Client.Manager
             if (WaitStep != msg.WaitStep)
             {
                 WaitStep = msg.WaitStep;
-                EventSystem.Instance.PostEvent(EEvent.OnRoomWaitStepChange, WaitStep);
+                Eventer.Instance.PostEvent(EEvent.OnRoomWaitStepChange, WaitStep);
                 if (WaitStep == 1)
                 {
                     byte[] decompressRawData = Helper.DecompressByteArray(msg.LoadStateRaw.ToByteArray());
@@ -378,6 +378,11 @@ namespace AxibugEmuOnline.Client.Manager
             Protobuf_Screnn_Frame msg = ProtoBufHelper.DeSerizlize<Protobuf_Screnn_Frame>(reqData);
             //解压
             byte[] data = Helper.DecompressByteArray(msg.RawBitmap.ToArray());
-        }
+        }
+
+        internal void SendHostRaw(byte[] stateRaw)
+        {
+            throw new NotImplementedException();
+        }
     }
 }
\ No newline at end of file
diff --git a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/CoreSupporter.cs b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/CoreSupporter.cs
index 959e513..e37caf3 100644
--- a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/CoreSupporter.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/CoreSupporter.cs
@@ -1,6 +1,8 @@
 using AxibugEmuOnline.Client.ClientCore;
+using AxiReplay;
 using System;
 using System.IO;
+using System.Runtime.InteropServices;
 using UnityEngine;
 using VirtualNes.Core;
 
@@ -90,10 +92,79 @@ namespace AxibugEmuOnline.Client
             return db.GetMapperNo(rom.GetPROM_CRC(), out mapperNo);
         }
 
+        private ControllerState m_sampledState;
         public ControllerState GetControllerState()
         {
-            var mapper = NesControllerMapper.Get();
-            return mapper.CreateState();
+            if (!InGameUI.Instance.IsOnline)
+            {
+                return m_sampledState;
+            }
+            else
+            {
+                //todo : �ӷ�������ȡ֡��������
+                return default;
+            }
+        }
+
+        public void SampleInput()
+        {
+            if (InGameUI.Instance.IsOnline)
+            {
+                if (App.roomMgr.netReplay.NextFrame(out var replayData, out int _))
+                {
+                    m_sampledState = FromNet(replayData);
+                    var localState = NesControllerMapper.Get().CreateState();
+                    var rawData = ToNet(localState);
+                    App.roomMgr.SendRoomSingelPlayerInput((uint)App.roomMgr.netReplay.mCurrPlayFrame, rawData);
+                }
+                else
+                {
+                    m_sampledState = default;
+                }
+            }
+            else
+            {
+                m_sampledState = NesControllerMapper.Get().CreateState();
+            }
+        }
+
+        public ControllerState FromNet(AxiReplay.ReplayStep step)
+        {
+            var temp = new ServerInputSnapShot();
+            var result = new ControllerState();
+            temp.all = step.InPut;
+            result.raw0 = temp.p1;
+            result.raw1 = temp.p2;
+            result.raw2 = temp.p3;
+            result.raw3 = temp.p4;
+            result.valid = true;
+
+            return result;
+        }
+
+        public uint ToNet(ControllerState state)
+        {
+            var temp = new ServerInputSnapShot();
+            temp.p1 = (byte)state.raw0;
+            temp.p2 = (byte)state.raw1;
+            temp.p3 = (byte)state.raw2;
+            temp.p4 = (byte)state.raw3;
+            return (uint)temp.all;
+        }
+
+        [StructLayout(LayoutKind.Explicit, Size = 8)]
+        struct ServerInputSnapShot
+        {
+            [FieldOffset(0)]
+            public UInt64 all;
+            [FieldOffset(0)]
+            public byte p1;
+            [FieldOffset(1)]
+            public byte p2;
+            [FieldOffset(2)]
+            public byte p3;
+            [FieldOffset(3)]
+            public byte p4;
         }
     }
 }
diff --git a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesControllerMapper.cs b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesControllerMapper.cs
index 867ae99..e6adeee 100644
--- a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesControllerMapper.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesControllerMapper.cs
@@ -87,6 +87,8 @@ namespace AxibugEmuOnline.Client
             public Mapper START = new Mapper(EnumButtonType.START);
             public Mapper MIC = new Mapper(EnumButtonType.MIC);
 
+
+
             public EnumButtonType GetButtons()
             {
                 EnumButtonType res = 0;
diff --git a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesEmulator.cs b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesEmulator.cs
index 67371d2..5d458ab 100644
--- a/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesEmulator.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/NesEmulator/NesEmulator.cs
@@ -8,14 +8,13 @@ using VirtualNes.Core.Debug;
 
 namespace AxibugEmuOnline.Client
 {
-
     public class NesEmulator : MonoBehaviour
-    { 
+    {
         public NES NesCore { get; private set; }
 
         public VideoProvider VideoProvider;
         public AudioProvider AudioProvider;
-        
+        public bool m_bPause;
 
         private void Start()
         {
@@ -50,9 +49,16 @@ namespace AxibugEmuOnline.Client
 
         private void Update()
         {
+            if (m_bPause) return;
+
             if (NesCore != null)
             {
+                Supporter.SampleInput();
                 var controlState = Supporter.GetControllerState();
+
+                //���δ�յ�Input����,����֡���ƽ�
+                if (!controlState.valid) return;
+
                 NesCore.pad.Sync(controlState);
                 NesCore.EmulateFrame(true);
 
@@ -62,6 +68,17 @@ namespace AxibugEmuOnline.Client
             }
         }
 
+
+        public void Pause()
+        {
+            m_bPause = true;
+        }
+
+        public void Resume()
+        {
+            m_bPause = false;
+        }
+
 #if UNITY_EDITOR
         [ContextMenu("ImportNesDB")]
         public void ImportNesDB()
diff --git a/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/InGameUI.cs b/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/InGameUI.cs
index 727efe9..5cd0b30 100644
--- a/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/InGameUI.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/InGameUI.cs
@@ -1,7 +1,9 @@
 using AxibugEmuOnline.Client.ClientCore;
+using AxibugEmuOnline.Client.Event;
 using AxibugEmuOnline.Client.Manager;
 using System;
 using System.Collections.Generic;
+using VirtualNes.Core;
 
 namespace AxibugEmuOnline.Client
 {
@@ -13,22 +15,26 @@ namespace AxibugEmuOnline.Client
         public override bool Enable => gameObject.activeInHierarchy;
 
         /// <summary> ָʾ����Ϸʵ���Ƿ�������ģʽ </summary>
-        public bool IsOnline => App.roomMgr.RoomState <= AxibugProtobuf.RoomGameState.OnlyHost;
+        public bool IsOnline => App.roomMgr.RoomState > AxibugProtobuf.RoomGameState.OnlyHost;
 
         private RomFile m_rom;
         private object m_core;
         private object m_state;
 
         private List<OptionMenu> menus = new List<OptionMenu>();
-
+        private StepPerformer m_stepPerformer;
 
         protected override void Awake()
         {
             Instance = this;
             gameObject.SetActiveEx(false);
+
+            m_stepPerformer = new StepPerformer(this);
+
             menus.Add(new InGameUI_SaveState(this));
             menus.Add(new InGameUI_LoadState(this));
             menus.Add(new InGameUI_QuitGame(this));
+
             base.Awake();
         }
 
@@ -73,15 +79,23 @@ namespace AxibugEmuOnline.Client
 
             m_rom = currentRom;
             m_core = core;
+            m_stepPerformer.Reset();
 
             if (App.user.IsLoggedIn)
             {
                 App.roomMgr.SendCreateRoom(m_rom.ID, 0, m_rom.Hash);
             }
 
+            Eventer.Instance.RegisterEvent<int>(EEvent.OnRoomWaitStepChange, OnServerStepUpdate);
+
             gameObject.SetActiveEx(true);
         }
 
+        private void OnServerStepUpdate(int step)
+        {
+            m_stepPerformer.Perform(step);
+        }
+
         public void Hide()
         {
             CommandDispatcher.Instance.UnRegistController(this);
@@ -96,6 +110,7 @@ namespace AxibugEmuOnline.Client
 
         public void QuitGame()
         {
+            Eventer.Instance.UnregisterEvent<int>(EEvent.OnRoomWaitStepChange, OnServerStepUpdate);
             App.roomMgr.SendLeavnRoom();
             App.emu.StopGame();
         }
diff --git a/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/StepPerformer.cs b/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/StepPerformer.cs
new file mode 100644
index 0000000..90a595f
--- /dev/null
+++ b/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/StepPerformer.cs
@@ -0,0 +1,75 @@
+using AxibugEmuOnline.Client.ClientCore;
+using System;
+using VirtualNes.Core;
+
+namespace AxibugEmuOnline.Client
+{
+    public class StepPerformer
+    {
+        private InGameUI m_inGameUI;
+        private int m_step = -1;
+
+        public StepPerformer(InGameUI inGameUI)
+        {
+            m_inGameUI = inGameUI;
+        }
+
+        public void Perform(int step)
+        {
+            m_step = step;
+
+
+            switch (m_step)
+            {
+                //等待主机上报快照
+                case 0:
+                    PauseCore();
+                    if (App.roomMgr.IsHost)
+                    {
+                        if (m_inGameUI.RomFile.Platform == EnumPlatform.NES)
+                        {
+                            var stateRaw = m_inGameUI.GetCore<NesEmulator>().NesCore.GetState().ToBytes();
+                            App.roomMgr.SendHostRaw(stateRaw);
+                        }
+                    }
+                    break;
+                //加载存档并发送Ready通知
+                case 1:
+                    PauseCore();
+                    var state = new State();
+                    state.FromByte(App.roomMgr.RawData);
+                    if (m_inGameUI.RomFile.Platform == EnumPlatform.NES)
+                    {
+                        m_inGameUI.GetCore<NesEmulator>().NesCore.LoadState(state);
+                    }
+                    App.roomMgr.SendRoomPlayerReady();
+                    break;
+                case 2:
+                    m_step = -1;
+                    ResumeCore();
+                    break;
+            }
+        }
+
+        private void PauseCore()
+        {
+            if (m_inGameUI.RomFile.Platform == EnumPlatform.NES)
+            {
+                m_inGameUI.GetCore<NesEmulator>().Pause();
+            }
+        }
+
+        private void ResumeCore()
+        {
+            if (m_inGameUI.RomFile.Platform == EnumPlatform.NES)
+            {
+                m_inGameUI.GetCore<NesEmulator>().Resume();
+            }
+        }
+
+        internal void Reset()
+        {
+            m_step = -1;
+        }
+    }
+}
diff --git a/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/StepPerformer.cs.meta b/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/StepPerformer.cs.meta
new file mode 100644
index 0000000..3ed241c
--- /dev/null
+++ b/AxibugEmuOnline.Client/Assets/Script/UI/InGameUI/StepPerformer.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6e5033cf98f86804bb50f84e3bbc956a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/AxibugEmuOnline.Client/Assets/Script/UI/OptionUI/OptionUI.cs b/AxibugEmuOnline.Client/Assets/Script/UI/OptionUI/OptionUI.cs
index edb254f..05f4525 100644
--- a/AxibugEmuOnline.Client/Assets/Script/UI/OptionUI/OptionUI.cs
+++ b/AxibugEmuOnline.Client/Assets/Script/UI/OptionUI/OptionUI.cs
@@ -131,6 +131,7 @@ namespace AxibugEmuOnline.Client
             if (!m_bPoped)
             {
                 m_bPoped = true;
+
                 DOTween.To(
                     () => MenuRoot.anchoredPosition.x,
                     (value) =>
@@ -142,6 +143,7 @@ namespace AxibugEmuOnline.Client
                     0,
                     0.3f
                     ).SetEase(Ease.OutCubic);
+
             }
         }
 
@@ -149,10 +151,11 @@ namespace AxibugEmuOnline.Client
         {
             if (m_bPoped)
             {
+                m_runtimeMenuItems.Clear();
+
                 SelectBorder.gameObject.SetActiveEx(false);
 
                 CommandDispatcher.Instance.UnRegistController(this);
-                m_bPoped = false;
                 Canvas.ForceUpdateCanvases();
                 var width = MenuRoot.rect.width;
                 DOTween.To(
@@ -166,6 +169,8 @@ namespace AxibugEmuOnline.Client
                     width,
                     0.3f
                     ).SetEase(Ease.OutCubic);
+
+                m_bPoped = false;
             }
         }
 
diff --git a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/ControllerState.cs b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/ControllerState.cs
index 418e35c..642b198 100644
--- a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/ControllerState.cs
+++ b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/ControllerState.cs
@@ -4,10 +4,12 @@ namespace VirtualNes.Core
 {
     public struct ControllerState
     {
-        private uint raw0;
-        private uint raw1;
-        private uint raw2;
-        private uint raw3;
+        public uint raw0;
+        public uint raw1;
+        public uint raw2;
+        public uint raw3;
+
+        public bool valid;
 
         public ControllerState(
             EnumButtonType player0_buttons,
@@ -19,6 +21,7 @@ namespace VirtualNes.Core
             raw1 = (uint)player1_buttons;
             raw2 = (uint)player2_buttons;
             raw3 = (uint)player3_buttons;
+            valid = true;
         }
 
         public bool HasButton(int player, EnumButtonType button)
diff --git a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/Supporter.cs b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/Supporter.cs
index eb5a91f..3ecd65c 100644
--- a/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/Supporter.cs
+++ b/AxibugEmuOnline.Client/Assets/VirtualNes.Core/Supporter/Supporter.cs
@@ -59,6 +59,11 @@ namespace VirtualNes.Core
             return s_support.GetControllerState();
         }
 
+        public static void SampleInput()
+        {
+            s_support.SampleInput();
+        }
+
         public static EmulatorConfig Config => s_support.Config;
     }
 
@@ -76,5 +81,6 @@ namespace VirtualNes.Core
         Stream OpenFile(string directPath, string fileName);
         bool TryGetMapperNo(ROM rom, out int mapperNo);
         ControllerState GetControllerState();
+        void SampleInput();
     }
 }
diff --git a/ProtobufCore/proto/protobuf_AxibugEmuOnline.proto b/ProtobufCore/proto/protobuf_AxibugEmuOnline.proto
index 070dec0..4eb8666 100644
--- a/ProtobufCore/proto/protobuf_AxibugEmuOnline.proto
+++ b/ProtobufCore/proto/protobuf_AxibugEmuOnline.proto
@@ -34,7 +34,7 @@ enum CommandID
 		// 			主机玩家 上行 CMD_Room_HostPlayer_UpdateStateRaw消息，上传即时存档
 		// 			主机玩家上传完毕之后，服务器会通知进入Step1
 		//
-		// Step1：服务器广播"等待-全员加载即时存档" CMD_Room_WaitStep WaitStep=[1] 附带即时存档 ---> 客户端：全员等待（主机玩家一人上传)
+		// Step1：服务器广播"等待-全员加载即时存档" CMD_Room_WaitStep WaitStep=[1] 附带即时存档 ---> 客户端：全员等待
 		//			所有玩家确保加载ROM和即时存档，并保持模拟器暂停，准备完毕后 发送 CMD_Room_Player_Ready
 		//			所有玩家Ready之后，服务器会根据所有玩家延迟提前跑若干Frame，通知进入Step2 
 		//