diff --git a/src/main/java/com/service/AdminInfoService.java b/src/main/java/com/service/AdminInfoService.java
new file mode 100644
index 0000000..633822f
--- /dev/null
+++ b/src/main/java/com/service/AdminInfoService.java
@@ -0,0 +1,78 @@
+package com.example.service;
+
+import com.example.dao.AdminInfoDao;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+import com.example.entity.AdminInfo;
+import com.example.exception.CustomException;
+import com.example.common.ResultCode;
+import com.example.vo.AdminInfoVo;
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import cn.hutool.crypto.SecureUtil;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import java.util.Date;
+import java.util.List;
+
+@Service
+public class AdminInfoService {
+
+    @Resource
+    private AdminInfoDao adminInfoDao;
+
+    public AdminInfo add(AdminInfo adminInfo) {
+        // 唯一校验
+        int count = adminInfoDao.checkRepeat("name", adminInfo.getName(), null);
+        if (count > 0) {
+            throw new CustomException("1001", "用户名\"" + adminInfo.getName() + "\"已存在");
+        }
+        if (StringUtils.isEmpty(adminInfo.getPassword())) {
+            // 默认密码123456
+            adminInfo.setPassword(SecureUtil.md5("123456"));
+        } else {
+            adminInfo.setPassword(SecureUtil.md5(adminInfo.getPassword()));
+        }
+        adminInfoDao.insertSelective(adminInfo);
+        return adminInfo;
+    }
+
+    public void delete(Long id) {
+        adminInfoDao.deleteByPrimaryKey(id);
+    }
+
+    public void update(AdminInfo adminInfo) {
+        adminInfoDao.updateByPrimaryKeySelective(adminInfo);
+    }
+
+    public AdminInfo findById(Long id) {
+        return adminInfoDao.selectByPrimaryKey(id);
+    }
+
+    public List<AdminInfoVo> findAll() {
+        return adminInfoDao.findByName("all");
+    }
+
+    public PageInfo<AdminInfoVo> findPage(String name, Integer pageNum, Integer pageSize, HttpServletRequest request) {
+        PageHelper.startPage(pageNum, pageSize);
+        List<AdminInfoVo> all = adminInfoDao.findByName(name);
+        return PageInfo.of(all);
+    }
+
+    public AdminInfoVo findByUserName(String name) {
+        return adminInfoDao.findByUsername(name);
+    }
+
+    public AdminInfo login(String username, String password) {
+        AdminInfo adminInfo = adminInfoDao.findByUsername(username);
+        if (adminInfo == null) {
+            throw new CustomException(ResultCode.USER_ACCOUNT_ERROR);
+        }
+        if (!SecureUtil.md5(password).equalsIgnoreCase(adminInfo.getPassword())) {
+            throw new CustomException(ResultCode.USER_ACCOUNT_ERROR);
+        }
+        return adminInfo;
+    }
+
+}