diff --git a/src/main/java/com/service/CollectInfoService.java b/src/main/java/com/service/CollectInfoService.java
new file mode 100644
index 0000000..3969acc
--- /dev/null
+++ b/src/main/java/com/service/CollectInfoService.java
@@ -0,0 +1,70 @@
+package com.example.service;
+
+import cn.hutool.core.date.DateUtil;
+import cn.hutool.json.JSONUtil;
+import com.example.dao.CollectInfoDao;
+import com.example.vo.PraiseInfoVo;
+import org.springframework.stereotype.Service;
+import com.example.entity.CollectInfo;
+import com.example.entity.AuthorityInfo;
+import com.example.entity.Account;
+import com.example.vo.CollectInfoVo;
+
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpSession;
+import java.util.Date;
+import java.util.List;
+
+@Service
+public class CollectInfoService {
+
+    @Resource
+    private CollectInfoDao collectInfoDao;
+
+    public CollectInfo add(CollectInfo collectInfo, HttpServletRequest request) {
+        HttpSession session = request.getSession();
+        Account user = (Account) session.getAttribute("user");
+        CollectInfoVo collectInfoVo = collectInfoDao.findByUser(user, collectInfo);
+        if (collectInfoVo != null) {
+            return null;
+        }
+        collectInfo.setUserId(user.getId());
+        collectInfo.setLevel(user.getLevel());
+        collectInfo.setTime(DateUtil.now());
+        collectInfoDao.insertSelective(collectInfo);
+        return collectInfo;
+    }
+
+    public void delete(Long id) {
+        collectInfoDao.deleteByPrimaryKey(id);
+    }
+
+    public void update(CollectInfo collectInfo) {
+        collectInfoDao.updateByPrimaryKeySelective(collectInfo);
+    }
+
+    public CollectInfo findById(Long id) {
+        return collectInfoDao.selectByPrimaryKey(id);
+    }
+
+    public List<CollectInfoVo> findAll() {
+        return collectInfoDao.findByName("all", null, null);
+    }
+
+    public PageInfo<CollectInfoVo> findPage(String name, Integer pageNum, Integer pageSize, HttpServletRequest request) {
+        PageHelper.startPage(pageNum, pageSize);
+        List<CollectInfoVo> all = findAllPage(request, name);
+        return PageInfo.of(all);
+    }
+
+    public List<CollectInfoVo> findAllPage(HttpServletRequest request, String name) {
+        String userId = request.getParameter("userId");
+        String level = request.getParameter("level");
+        return collectInfoDao.findByName(name, userId, level);
+    }
+
+}