diff --git a/Server/SQL/DeckUnitInfo.cs b/Server/SQL/DeckUnitInfo.cs
new file mode 100644
index 0000000..6d596ce
--- /dev/null
+++ b/Server/SQL/DeckUnitInfo.cs
@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore;
+using Npgsql.EntityFrameworkCore.PostgreSQL;
+using System.ComponentModel.DataAnnotations.Schema;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace Server.SQL
+{
+    [Table("deck_unit_info", Schema = "gamedb")]
+    public class DeckUnitInfo
+    {
+        public int id { get; set; }
+        public string uuid { get; set; }
+        public string mail { get; set; }
+        public string nickname { get; set; }
+    }
+
+    public class DeckUnitInfoSQL : SQL<DeckUnitInfo>
+    {
+        public override DbSet<DeckUnitInfo> table { get; set; }
+        public override string tablename { get { return "deck_unit_info"; } }
+    }
+}
diff --git a/Server/SQL/LeaderInfo.cs b/Server/SQL/LeaderInfo.cs
new file mode 100644
index 0000000..ec87742
--- /dev/null
+++ b/Server/SQL/LeaderInfo.cs
@@ -0,0 +1,22 @@
+using Microsoft.EntityFrameworkCore;
+using Npgsql.EntityFrameworkCore.PostgreSQL;
+using System.ComponentModel.DataAnnotations.Schema;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace Server.SQL
+{
+    [Table("leader_info", Schema = "gamedb")]
+    public class LeaderInfo
+    {
+        public int id { get; set; }
+        public string uuid { get; set; }
+        public string mail { get; set; }
+        public string nickname { get; set; }
+    }
+
+    public class LeaderInfoSQL : SQL<LeaderInfo>
+    {
+        public override DbSet<LeaderInfo> table { get; set; }
+        public override string tablename { get { return "leader_info"; } }
+    }
+}
diff --git a/Server/SQL/User.cs b/Server/SQL/User.cs
new file mode 100644
index 0000000..6de7cce
--- /dev/null
+++ b/Server/SQL/User.cs
@@ -0,0 +1,32 @@
+using Microsoft.EntityFrameworkCore;
+using Npgsql.EntityFrameworkCore.PostgreSQL;
+using System.ComponentModel.DataAnnotations.Schema;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace Server.SQL
+{
+    [Table("user", Schema = "gamedb")]
+    public class User
+    {
+        public int id { get; set; }
+        public string uuid { get; set; }
+        public string mail { get; set; }
+        public string nickname { get; set; }
+    }
+
+    public class UserSQL : SQL<User>
+    {
+        public override DbSet<User> table { get; set; }
+        public override string tablename { get { return "user"; } }
+
+        public User SelectUuid(string uuid)
+        {
+            return table.SingleOrDefault(data => data.uuid == uuid);
+        }
+
+        public User SelectMail(string mail)
+        {
+            return table.SingleOrDefault(data => data.mail == mail);
+        }
+    }
+}
diff --git a/Server/Service/Login.cs b/Server/Service/Login.cs
new file mode 100644
index 0000000..87f4760
--- /dev/null
+++ b/Server/Service/Login.cs
@@ -0,0 +1,83 @@
+using Server.System;
+using Newtonsoft.Json;
+using Server.SQL;
+
+namespace Server.Service
+{
+    public class Login : AbstractService
+    {
+        private LoginReq req;
+        public override string Process()
+        {
+            UserSQL userSql = new UserSQL();
+            User user;
+            if (req.uuid == null)
+            {
+                //최초 메일 로그인
+                //게스트 로그인은 허용하지 않고 무조건 구글로그인 혹은 마스토돈 로그인만 가능하게 처리하기
+                user = userSql.SelectMail(req.mail);
+            }
+            else
+            {
+                user = userSql.SelectUuid(req.uuid);
+            }
+            if(user == null)
+            {
+                #region 신규유저 생성
+                user = new User();
+                user.mail = req.mail;
+                user.uuid = Guid.NewGuid().ToString();
+                userSql.Insert(user);
+                #endregion
+                #region 신규 덱, 초기 유닛 지급
+                #endregion
+            }
+
+            SaveQurry(userSql, user);
+
+            return makeResp(user);
+        }
+
+        public void SaveQurry(UserSQL userSql, User user)
+        {
+            userSql.Insert(user);
+        }
+
+        public override Protocol ProtocolValue() => Protocol.Login;
+        
+        public override Req Requst(string json)
+        {
+            req = JsonConvert.DeserializeObject<LoginReq>(json);
+            return req;
+        }
+
+        private string makeResp(User user)
+        {
+            LoginResp resp = new LoginResp();
+            resp.nickname = user.nickname;
+            resp.uuid = user.uuid;
+            resp.status = 200;
+            return resp.ToJson();
+        }
+
+
+    }
+
+    public class LoginReq : Req
+    {
+        public string mail;
+        public string uuid;
+        public override bool IsReceivedAllField()
+        {
+            if(mail == null && uuid == null)
+                return false;
+            return true;
+        }
+    }
+
+    public class LoginResp : Resp
+    {
+        public string uuid;
+        public string nickname;
+    }
+}
diff --git a/Server/System/Enums.cs b/Server/System/Enums.cs
index 152974d..3f8904d 100644
--- a/Server/System/Enums.cs
+++ b/Server/System/Enums.cs
@@ -9,6 +9,7 @@
 
 
     Downlode = 100,//기획 데이터 다운로드
+    Login = 101,//기획 데이터 다운로드
 }
 
 public enum Error
diff --git a/Server/obj/Debug/net8.0/Server.csproj.CoreCompileInputs.cache b/Server/obj/Debug/net8.0/Server.csproj.CoreCompileInputs.cache
index 996739f..8e89349 100644
--- a/Server/obj/Debug/net8.0/Server.csproj.CoreCompileInputs.cache
+++ b/Server/obj/Debug/net8.0/Server.csproj.CoreCompileInputs.cache
@@ -1 +1 @@
-a8963fa66f05382597e3668fc4d7b87af57a54943eab383a2b7c8418ec1b6073
+dd557d62badea6ea383f22ecfcd791495e975b22b1c7b07715ed4657eabd5e04
diff --git a/Server/obj/Debug/net8.0/Server.dll b/Server/obj/Debug/net8.0/Server.dll
index 13803de..f1d322f 100644
Binary files a/Server/obj/Debug/net8.0/Server.dll and b/Server/obj/Debug/net8.0/Server.dll differ
diff --git a/Server/obj/Debug/net8.0/Server.genruntimeconfig.cache b/Server/obj/Debug/net8.0/Server.genruntimeconfig.cache
index db4c5b7..1ae2c79 100644
--- a/Server/obj/Debug/net8.0/Server.genruntimeconfig.cache
+++ b/Server/obj/Debug/net8.0/Server.genruntimeconfig.cache
@@ -1 +1 @@
-51569073025ff8d42d413f4a9e547cbb8da5c9713f87cb390a23e4fd403de519
+f07a5d637b9aa528bca131b13fc576f71d7e7a53b21695ee30255e0137559728
diff --git a/Server/obj/Debug/net8.0/apphost.exe b/Server/obj/Debug/net8.0/apphost.exe
index e33639f..5f14ed1 100644
Binary files a/Server/obj/Debug/net8.0/apphost.exe and b/Server/obj/Debug/net8.0/apphost.exe differ
diff --git a/Server/obj/Debug/net8.0/ref/Server.dll b/Server/obj/Debug/net8.0/ref/Server.dll
index d426025..444b677 100644
Binary files a/Server/obj/Debug/net8.0/ref/Server.dll and b/Server/obj/Debug/net8.0/ref/Server.dll differ
diff --git a/Server/obj/Debug/net8.0/refint/Server.dll b/Server/obj/Debug/net8.0/refint/Server.dll
index d426025..444b677 100644
Binary files a/Server/obj/Debug/net8.0/refint/Server.dll and b/Server/obj/Debug/net8.0/refint/Server.dll differ