diff --git a/src/main/java/github/benjamin/equipreservebackend/controller/TeamController.java b/src/main/java/github/benjamin/equipreservebackend/controller/TeamController.java
index 45ed233..163d4e2 100644
--- a/src/main/java/github/benjamin/equipreservebackend/controller/TeamController.java
+++ b/src/main/java/github/benjamin/equipreservebackend/controller/TeamController.java
@@ -1,13 +1,13 @@
 package github.benjamin.equipreservebackend.controller;
 
-import github.benjamin.equipreservebackend.mapper.TeamMapper;
+import github.benjamin.equipreservebackend.dto.TeamDTO;
 import github.benjamin.equipreservebackend.response.ResponseResult;
 import github.benjamin.equipreservebackend.service.TeamService;
+import github.benjamin.equipreservebackend.vo.TeamLabelVO;
 import github.benjamin.equipreservebackend.vo.TeamVO;
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
 
@@ -18,9 +18,35 @@ public class TeamController {
 
     private final TeamService teamService;
 
+    @GetMapping("/team-label")
+    public ResponseResult<List<TeamLabelVO>> getTeamLabel() {
+        return ResponseResult.success(teamService.getTeamLabel());
+    }
+
     @GetMapping("/teams")
     public ResponseResult<List<TeamVO>> getTeams() {
         return ResponseResult.success(teamService.getTeams());
     }
 
+    @PreAuthorize("hasRole('ADMIN')")
+    @DeleteMapping("/team/{id}")
+    public ResponseResult<?> deleteTeam(@PathVariable("id") Long id) {
+        teamService.deleteTeam(id);
+        return ResponseResult.success();
+    }
+
+    @PreAuthorize("hasRole('ADMIN')")
+    @PostMapping("/team")
+    public ResponseResult<?> addTeam(@RequestBody TeamDTO dto) {
+        teamService.addTeam(dto.getName());
+        return ResponseResult.success();
+    }
+
+    @PreAuthorize("hasRole('ADMIN')")
+    @PutMapping("/team/{id}")
+    public ResponseResult<?> updateTeam(@PathVariable Long id,
+                                        @RequestBody TeamDTO dto) {
+        teamService.updateTeam(id, dto.getName());
+        return ResponseResult.success();
+    }
 }
diff --git a/src/main/java/github/benjamin/equipreservebackend/dto/TeamDTO.java b/src/main/java/github/benjamin/equipreservebackend/dto/TeamDTO.java
new file mode 100644
index 0000000..8a58cd5
--- /dev/null
+++ b/src/main/java/github/benjamin/equipreservebackend/dto/TeamDTO.java
@@ -0,0 +1,10 @@
+package github.benjamin.equipreservebackend.dto;
+
+import lombok.Data;
+
+@Data
+public class TeamDTO {
+
+    private String name;
+
+}
diff --git a/src/main/java/github/benjamin/equipreservebackend/entity/Team.java b/src/main/java/github/benjamin/equipreservebackend/entity/Team.java
index 94360b2..6fbb69e 100644
--- a/src/main/java/github/benjamin/equipreservebackend/entity/Team.java
+++ b/src/main/java/github/benjamin/equipreservebackend/entity/Team.java
@@ -2,16 +2,20 @@ package github.benjamin.equipreservebackend.entity;
 
 import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.Data;
+import lombok.NoArgsConstructor;
 
 import java.time.LocalDateTime;
 
 @Data
 @TableName("teams")
+@NoArgsConstructor
 public class Team {
 
     private Long id;
     private String name;
-    private Long leaderId;
     private LocalDateTime createdTime;
 
+    public Team(String name) {
+        this.name = name;
+    }
 }
diff --git a/src/main/java/github/benjamin/equipreservebackend/mapper/TeamMapper.java b/src/main/java/github/benjamin/equipreservebackend/mapper/TeamMapper.java
index ed45f0d..f2be3ca 100644
--- a/src/main/java/github/benjamin/equipreservebackend/mapper/TeamMapper.java
+++ b/src/main/java/github/benjamin/equipreservebackend/mapper/TeamMapper.java
@@ -2,8 +2,12 @@ package github.benjamin.equipreservebackend.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import github.benjamin.equipreservebackend.entity.Team;
+import github.benjamin.equipreservebackend.vo.TeamVO;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
+
 @Repository
 public interface TeamMapper extends BaseMapper<Team> {
+    List<TeamVO> getTeams();
 }
diff --git a/src/main/java/github/benjamin/equipreservebackend/service/TeamService.java b/src/main/java/github/benjamin/equipreservebackend/service/TeamService.java
index 6e6810a..fa588f4 100644
--- a/src/main/java/github/benjamin/equipreservebackend/service/TeamService.java
+++ b/src/main/java/github/benjamin/equipreservebackend/service/TeamService.java
@@ -1,9 +1,18 @@
 package github.benjamin.equipreservebackend.service;
 
+import github.benjamin.equipreservebackend.vo.TeamLabelVO;
 import github.benjamin.equipreservebackend.vo.TeamVO;
 
 import java.util.List;
 
 public interface TeamService {
+    List<TeamLabelVO> getTeamLabel();
+
     List<TeamVO> getTeams();
+
+    void deleteTeam(Long id);
+
+    void addTeam(String name);
+
+    void updateTeam(Long id, String name);
 }
diff --git a/src/main/java/github/benjamin/equipreservebackend/service/impl/TeamServiceImpl.java b/src/main/java/github/benjamin/equipreservebackend/service/impl/TeamServiceImpl.java
index ca75333..19e883f 100644
--- a/src/main/java/github/benjamin/equipreservebackend/service/impl/TeamServiceImpl.java
+++ b/src/main/java/github/benjamin/equipreservebackend/service/impl/TeamServiceImpl.java
@@ -1,8 +1,10 @@
 package github.benjamin.equipreservebackend.service.impl;
 
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
 import github.benjamin.equipreservebackend.entity.Team;
 import github.benjamin.equipreservebackend.mapper.TeamMapper;
 import github.benjamin.equipreservebackend.service.TeamService;
+import github.benjamin.equipreservebackend.vo.TeamLabelVO;
 import github.benjamin.equipreservebackend.vo.TeamVO;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -16,10 +18,32 @@ public class TeamServiceImpl implements TeamService {
     private final TeamMapper teamMapper;
 
     @Override
-    public List<TeamVO> getTeams() {
+    public List<TeamLabelVO> getTeamLabel() {
 
         List<Team> teams = teamMapper.selectList(null);
 
-        return teams.stream().map(TeamVO::new).toList();
+        return teams.stream().map(TeamLabelVO::new).toList();
+    }
+
+    @Override
+    public List<TeamVO> getTeams() {
+        return teamMapper.getTeams();
+    }
+
+    @Override
+    public void deleteTeam(Long id) {
+        teamMapper.deleteById(id);
+    }
+
+    @Override
+    public void addTeam(String name) {
+        teamMapper.insert(new Team(name));
+    }
+
+    @Override
+    public void updateTeam(Long id, String name) {
+        teamMapper.update(new LambdaUpdateWrapper<Team>()
+                .eq(Team::getId, id)
+                .set(Team::getName, name));
     }
 }
diff --git a/src/main/java/github/benjamin/equipreservebackend/vo/TeamLabelVO.java b/src/main/java/github/benjamin/equipreservebackend/vo/TeamLabelVO.java
new file mode 100644
index 0000000..e16817d
--- /dev/null
+++ b/src/main/java/github/benjamin/equipreservebackend/vo/TeamLabelVO.java
@@ -0,0 +1,18 @@
+package github.benjamin.equipreservebackend.vo;
+
+import github.benjamin.equipreservebackend.entity.Team;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+public class TeamLabelVO {
+
+    private String label;
+    private String value;
+
+    public TeamLabelVO(Team t) {
+        this.label = t.getName();
+        this.value = t.getId().toString();
+    }
+}
diff --git a/src/main/java/github/benjamin/equipreservebackend/vo/TeamVO.java b/src/main/java/github/benjamin/equipreservebackend/vo/TeamVO.java
index 1208846..f33179c 100644
--- a/src/main/java/github/benjamin/equipreservebackend/vo/TeamVO.java
+++ b/src/main/java/github/benjamin/equipreservebackend/vo/TeamVO.java
@@ -1,18 +1,15 @@
 package github.benjamin.equipreservebackend.vo;
 
-import github.benjamin.equipreservebackend.entity.Team;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
 import lombok.Data;
-import lombok.NoArgsConstructor;
 
 @Data
-@NoArgsConstructor
 public class TeamVO {
 
-    private String label;
-    private String value;
+    @JsonSerialize(using = ToStringSerializer.class)
+    private Long id;
+    private String name;
+    private Integer size;
 
-    public TeamVO(Team t) {
-        this.label = t.getName();
-        this.value = t.getId().toString();
-    }
 }
diff --git a/src/main/resources/mapper/TeamMapper.xml b/src/main/resources/mapper/TeamMapper.xml
new file mode 100644
index 0000000..a679798
--- /dev/null
+++ b/src/main/resources/mapper/TeamMapper.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+
+<mapper namespace="github.benjamin.equipreservebackend.mapper.TeamMapper">
+
+    <select id="getTeams" resultType="github.benjamin.equipreservebackend.vo.TeamVO">
+        SELECT
+            t.id AS id,
+            t.name AS name,
+            COUNT(u.id) AS size
+        FROM
+            teams t
+                LEFT JOIN
+            users u ON t.id = u.team_id
+        GROUP BY
+            t.id, t.name
+        ORDER BY t.name
+    </select>
+
+</mapper>
\ No newline at end of file