diff --git a/AX.WebDrillServer/AX.WebDrillServer.sln b/AX.WebDrillServer/AX.WebDrillServer.sln
index dc60608..4c14b7f 100644
--- a/AX.WebDrillServer/AX.WebDrillServer.sln
+++ b/AX.WebDrillServer/AX.WebDrillServer.sln
@@ -5,6 +5,8 @@ VisualStudioVersion = 17.3.32825.248
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AX.WebDrillServer", "AX.WebDrillServer.csproj", "{B594C541-C030-412E-8B89-D38C24765D2D}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestHub", "..\TestHub\TestHub.csproj", "{4B962EF6-1C2A-4283-B21D-46E6C57DD8D2}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -18,6 +20,12 @@ Global
 		{B594C541-C030-412E-8B89-D38C24765D2D}.Release|Any CPU.Build.0 = Release|Any CPU
 		{B594C541-C030-412E-8B89-D38C24765D2D}.Test|Any CPU.ActiveCfg = Test|Any CPU
 		{B594C541-C030-412E-8B89-D38C24765D2D}.Test|Any CPU.Build.0 = Test|Any CPU
+		{4B962EF6-1C2A-4283-B21D-46E6C57DD8D2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4B962EF6-1C2A-4283-B21D-46E6C57DD8D2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4B962EF6-1C2A-4283-B21D-46E6C57DD8D2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4B962EF6-1C2A-4283-B21D-46E6C57DD8D2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4B962EF6-1C2A-4283-B21D-46E6C57DD8D2}.Test|Any CPU.ActiveCfg = Debug|Any CPU
+		{4B962EF6-1C2A-4283-B21D-46E6C57DD8D2}.Test|Any CPU.Build.0 = Debug|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/AX.WebDrillServer/Controllers/AccountsController.cs b/AX.WebDrillServer/Controllers/AccountsController.cs
index c641126..6a74a58 100644
--- a/AX.WebDrillServer/Controllers/AccountsController.cs
+++ b/AX.WebDrillServer/Controllers/AccountsController.cs
@@ -109,18 +109,16 @@ namespace AX.WebDrillServer.Controllers
             }
         }
         /// <summary>
-        /// 登出
+        /// 登出系统。
         /// </summary>
-        /// <param name="dto"></param>
         /// <returns></returns>
-        [AllowAnonymous]
-        [ProducesResponseType(StatusCodes.Status200OK)]
-        [ProducesResponseType(StatusCodes.Status400BadRequest)]
         [ProducesResponseType(StatusCodes.Status401Unauthorized)]
-        [HttpPost("[action]")]
-        public async Task<ActionResult<UserDto>> SignOut([FromBody] UserForCreateDto dto)
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [HttpPost("SignOut")]
+        public ActionResult AccountSignOut()
         {
-            throw new NotImplementedException();
+            //TODO: 把 JWT 放入黑名单，其它地方则验证黑名单，将来再处理
+            return Ok();
         }
         /// <summary>
         /// 刷新令牌。
diff --git a/AX.WebDrillServer/Data/ApplicationDbContextSeed.cs b/AX.WebDrillServer/Data/ApplicationDbContextSeed.cs
index a736b26..4477c7f 100644
--- a/AX.WebDrillServer/Data/ApplicationDbContextSeed.cs
+++ b/AX.WebDrillServer/Data/ApplicationDbContextSeed.cs
@@ -72,15 +72,15 @@ namespace AX.WebDrillServer.Data
             var org2 = new Organization()
             {
                 Code = "1-1-1",
-                Name = "XXX大队",
-                Level = OrganizationLevel.Battalion,
+                Name = "XXX支队",
+                Level = OrganizationLevel.Brigade,
             };
             context.Organizations.Add(org2);
             var org3 = new Organization()
             {
                 Code = "1-1-1-1",
-                Name = "XXX支队",
-                Level = OrganizationLevel.Brigade,
+                Name = "XXX大队",
+                Level = OrganizationLevel.Battalion,
             };
             context.Organizations.Add(org3);
             var org4 = new Organization()
diff --git a/AX.WebDrillServer/Hubs/FireDeductionHub.cs b/AX.WebDrillServer/Hubs/FireDeductionHub.cs
new file mode 100644
index 0000000..1315797
--- /dev/null
+++ b/AX.WebDrillServer/Hubs/FireDeductionHub.cs
@@ -0,0 +1,176 @@
+using AX.WebDrillServer.Data;
+using AX.WebDrillServer.Extensions;
+using AX.WebDrillServer.Middlewares.Jwts;
+using AX.WebDrillServer.Models;
+using AX.WebDrillServer.Services.FireDeductionHub;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.SignalR;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Caching.Memory;
+using System.Collections.Concurrent;
+using System.Security.Claims;
+
+namespace AX.WebDrillServer.Hubs
+{
+    //[Authorize]
+    public class FireDeductionHub : Hub
+    {
+        private readonly RoomManager roomManager;
+
+        private readonly ApplicationDbContext _dbContext;
+
+        private readonly ILogger<FireDeductionHub> _logger;
+
+        public FireDeductionHub(
+            ApplicationDbContext dbContext,
+            ILogger<FireDeductionHub> logger,
+            RoomManager roomManager)
+        {
+            _dbContext = dbContext;
+            _logger = logger;
+            this.roomManager = roomManager;
+        }
+        public async Task<FireDeductionRoom> CreateRoom(RoomCreateDto createInfo, FireDeductionUser user)
+        {
+            FireDeductionRoom room = new FireDeductionRoom();
+            room.Owner = createInfo.UserId;
+            room.RoomId = Guid.NewGuid().ToString();
+            room.RoomName = createInfo.RoomName;
+            room.Password = createInfo.RoomPassword;
+            room.Users.Add(user);
+            await Groups.AddToGroupAsync(user.ConnectionId, room.RoomId);
+            return room;
+        }
+        public async Task<bool> EnterRoom(string roomId, FireDeductionUser user, string? password = null)
+        {
+            bool result = false;
+
+            var room = roomManager.GetRoom(roomId);
+            if (room != null && room.Password == password)
+            {
+                if (!room.Users.Contains(user))
+                {
+                    result = true;
+                }
+                else
+                {
+                    throw new NotImplementedException("房间中已经存在该用户!");
+                }
+            }
+            else
+            {
+                throw new NotImplementedException("房间信息有误!");
+            }
+
+
+            return result;
+        }
+
+        public async Task<bool> LeaveRoom(string roomId, string userId)
+        {
+            bool result = false;
+            await Task.Run(() =>
+            {
+                var room = roomManager.GetRoom(roomId);
+                if (room != null)
+                {
+                    var user = room.Users.FirstOrDefault(u => u.UserId == userId);
+                    if (user != null)
+                    {
+                        room.Users.Remove(user);
+                        if (room.Users.Count == 0)
+                        {
+                            //TODO:保持空房间xx分钟
+                        }
+                    }
+                    else
+                    {
+                        throw new NotImplementedException("用户信息有误!");
+                    }
+                }
+                else
+                {
+                    throw new NotImplementedException("房间信息有误!");
+                }
+            });
+
+            return result;
+        }
+        public async Task RoomSendMessage(string RoomId, string Message)
+        {
+            await Clients.Group(RoomId).SendAsync(Message);
+            //TODO:保存数据
+        }
+
+        public async Task SendMessage(string user, string Message)
+        {
+            await Clients.All.SendAsync(Message);
+            //TODO:保存数据
+        }
+
+        public override async Task OnConnectedAsync()
+        {
+            try
+            {
+                var userId = Context.UserIdentifier;
+                var userName = Context.GetNameOfCurrentUser();
+                FireDeductionUser? user = roomManager.GetUser(userId!);
+
+                if (user != null)
+                {
+                    user.Online = true;
+                    var room = roomManager.GetRoomByUserId(user.UserId);
+                    if (room != null)
+                    {
+                        //断线重连
+                    }
+                }
+                else
+                {
+                    user = new FireDeductionUser();
+                    user.ConnectionId = Context.ConnectionId;
+                    user.UserId = userId!;
+                    user.UserName = userName!;
+                }
+                _logger.LogInformation("[{userId}][{name}] connected", userId, userName);
+
+                await base.OnConnectedAsync();
+            }
+            catch (Exception)
+            {
+                throw;
+            }
+        }
+
+        public override async Task OnDisconnectedAsync(Exception? exception)
+        {
+            try
+            {
+                var userId = Context.UserIdentifier;
+                var userName = Context.User?.FindFirstValue(JwtClaimTypes.Name);
+                if (userId == null) _logger.LogError("无效的 userId: [{userId}]!", userId);
+
+                if (userId != null)
+                {
+                    var user = roomManager.GetUser(userId!);
+                    if (user != null)
+                    {
+                        user.Online = false;
+                        var room = roomManager.GetRoomByUserId(user.UserId);
+                        if (room != null)
+                        {
+                            //断线
+                        }
+                    }
+                }
+
+                await base.OnDisconnectedAsync(exception);
+                _logger.LogInformation("[{userId}][{name}] 断开了连接", userId, userName);
+            }
+            catch (Exception)
+            {
+                throw;
+            }
+        }
+    }
+}
diff --git a/AX.WebDrillServer/Models/Room.cs b/AX.WebDrillServer/Models/Room.cs
deleted file mode 100644
index 4270008..0000000
--- a/AX.WebDrillServer/Models/Room.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-namespace AX.WebDrillServer.Models
-{
-    /// <summary>
-    /// 房间表
-    /// </summary>
-    public class Room : EntityBase
-    {
-        /// <summary>
-        /// 密码
-        /// </summary>
-        public string? Password { get; set; }
-        /// <summary>
-        /// 所属
-        /// </summary>
-        public User? Owner { get; set; }  
-        /// <summary>
-        /// 用户
-        /// </summary>
-        public ICollection<User>? Users { get; set; }
-    }
-}
diff --git a/AX.WebDrillServer/Program.cs b/AX.WebDrillServer/Program.cs
index b7be7c4..1038054 100644
--- a/AX.WebDrillServer/Program.cs
+++ b/AX.WebDrillServer/Program.cs
@@ -5,6 +5,7 @@ using AX.WebDrillServer.Extensions;
 using AX.WebDrillServer.Hubs;
 using AX.WebDrillServer.Middlewares;
 using AX.WebDrillServer.Middlewares.Jwts;
+using AX.WebDrillServer.Services.FireDeductionHub;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.AspNetCore.Mvc.Authorization;
 using Microsoft.AspNetCore.Mvc.Formatters;
@@ -18,7 +19,7 @@ using System.Text;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
-const string ProductName = "Web服务器";
+const string ProductName = "沙盘推演";
 const string ProductVersion = "v1.0";
 const string ApiVersion = "v1";
 
@@ -108,7 +109,7 @@ builder.Services.AddAuthorization();
 
 // Email Service
 //builder.Services.AddSingleton<IEmailService, EmailService>();
-
+builder.Services.AddSingleton<RoomManager>();
 builder.Services.AddMemoryCache();
 
 builder.Services
@@ -271,5 +272,6 @@ app.MapControllers();
 
 //app.MapHub<NotificationHub>("/hubs/notification");
 //app.MapHub<TaskChatHub>("/hubs/taskchat");
+app.MapHub<FireDeductionHub>("/hubs/FireDeductionHub");
 
 app.Run();
\ No newline at end of file
diff --git a/AX.WebDrillServer/Services/FireDeductionHub/FireDeductionRoom.cs b/AX.WebDrillServer/Services/FireDeductionHub/FireDeductionRoom.cs
new file mode 100644
index 0000000..64e06c6
--- /dev/null
+++ b/AX.WebDrillServer/Services/FireDeductionHub/FireDeductionRoom.cs
@@ -0,0 +1,35 @@
+using Org.BouncyCastle.Asn1.X509;
+
+namespace AX.WebDrillServer.Services.FireDeductionHub
+{
+    public enum RoomState
+    {
+        准备 = 0,
+        进行中,
+        结束
+    }
+    /// <summary>
+    /// 沙盘推演房间
+    /// </summary>
+    public class FireDeductionRoom
+    {
+        public string RoomId { get; set; } = null!;
+        public string RoomName { get; set; } = null!;
+        /// <summary>
+        /// 房间密码
+        /// </summary>
+        public string? Password;
+        public RoomState State { get; set; } = RoomState.准备;
+        /// <summary>
+        /// 房间最大人数
+        /// </summary>
+        public int MaxPersons = 100;
+        /// <summary>
+        /// 房间所属,默认是创建者
+        /// </summary>
+        public string Owner { get; set; } = null!;
+        public List<FireDeductionUser> Users { get; set; } = new List<FireDeductionUser>();
+        public Dictionary<DateTime, string>? FrameData { get; set; }
+        public Dictionary<DateTime, string>? EventData { get; set; }
+    }
+}
diff --git a/AX.WebDrillServer/Services/FireDeductionHub/FireDeductionUser.cs b/AX.WebDrillServer/Services/FireDeductionHub/FireDeductionUser.cs
new file mode 100644
index 0000000..2e937ca
--- /dev/null
+++ b/AX.WebDrillServer/Services/FireDeductionHub/FireDeductionUser.cs
@@ -0,0 +1,14 @@
+namespace AX.WebDrillServer.Services.FireDeductionHub
+{
+    /// <summary>
+    /// 沙盘推演用户
+    /// </summary>
+    public class FireDeductionUser
+    {
+        public string UserId { get; set; } = null!;
+        public string UserName { get; set; } = null!;
+        public bool Online { get; set; } = true;
+        public bool Left { get; set; }
+        public string ConnectionId { get; set; } = null!;
+    }
+}
diff --git a/AX.WebDrillServer/Services/FireDeductionHub/RoomCreateDto.cs b/AX.WebDrillServer/Services/FireDeductionHub/RoomCreateDto.cs
new file mode 100644
index 0000000..4246cf8
--- /dev/null
+++ b/AX.WebDrillServer/Services/FireDeductionHub/RoomCreateDto.cs
@@ -0,0 +1,11 @@
+namespace AX.WebDrillServer.Services.FireDeductionHub
+{
+    public class RoomCreateDto
+    {
+        public string UserId { get; set; } = null!;
+        public string? RoomPassword { get; set; }
+        public string RoomName { get; set; } = null!;
+        public int MaxPerson { get; set; } = 20;
+
+    }
+}
diff --git a/AX.WebDrillServer/Services/FireDeductionHub/RoomManager.cs b/AX.WebDrillServer/Services/FireDeductionHub/RoomManager.cs
new file mode 100644
index 0000000..e6ac7cd
--- /dev/null
+++ b/AX.WebDrillServer/Services/FireDeductionHub/RoomManager.cs
@@ -0,0 +1,79 @@
+namespace AX.WebDrillServer.Services.FireDeductionHub
+{
+    public class RoomManager
+    {
+
+        private List<FireDeductionRoom> fireDeductionRooms = new List<FireDeductionRoom>();
+        private List<FireDeductionUser> fireDeductionUsers = new List<FireDeductionUser>();
+
+
+        public FireDeductionRoom? GetRoom(string roomId)
+        {
+            lock (this)
+            {
+                return fireDeductionRooms.Where(r => r.RoomId == roomId).SingleOrDefault();
+            }
+        }
+        public FireDeductionUser? GetUser(string userId)
+        {
+            lock (this)
+            {
+                return fireDeductionUsers.Where(r => r.UserId == userId).SingleOrDefault();
+            }
+        }
+        public FireDeductionRoom? GetRoomByUserId(string userId)
+        {
+            lock (this)
+            {
+                return fireDeductionRooms.Where(r => r.Users.Where(u => u.UserId == userId).SingleOrDefault() != null).SingleOrDefault();
+            }
+        }
+        public void AddRoom(FireDeductionRoom room)
+        {
+            lock (this)
+            {
+                if (!fireDeductionRooms.Contains(room))
+                {
+                    fireDeductionRooms.Add(room);
+                }
+            }
+        }
+        public void RemoveRoom(string roomId)
+        {
+            lock (this)
+            {
+                for (int i = 0; i < fireDeductionRooms.Count; i++)
+                {
+                    if (fireDeductionRooms[i].RoomId == roomId)
+                    {
+                        fireDeductionRooms.RemoveAt(i);
+                    }
+                }
+            }
+        }
+
+        public void AddUser(FireDeductionUser user)
+        {
+            lock (this)
+            {
+                if (!fireDeductionUsers.Contains(user))
+                {
+                    fireDeductionUsers.Add(user);
+                }
+            }
+        }
+        public void RemoveUser(string userId)
+        {
+            lock (this)
+            {
+                for (int i = 0; i < fireDeductionUsers.Count; i++)
+                {
+                    if (fireDeductionUsers[i].UserId == userId)
+                    {
+                        fireDeductionUsers.RemoveAt(i);
+                    }
+                }
+            }
+        }
+    }
+}