diff --git a/main/manager-api/src/main/java/xiaozhi/modules/device/service/impl/DeviceServiceImpl.java b/main/manager-api/src/main/java/xiaozhi/modules/device/service/impl/DeviceServiceImpl.java
index 99b40a38..0475f2e9 100644
--- a/main/manager-api/src/main/java/xiaozhi/modules/device/service/impl/DeviceServiceImpl.java
+++ b/main/manager-api/src/main/java/xiaozhi/modules/device/service/impl/DeviceServiceImpl.java
@@ -255,8 +255,19 @@ public class DeviceServiceImpl extends BaseServiceImpl<DeviceDao, DeviceEntity>
 
     @Override
     public Date getLatestLastConnectionTime(String agentId) {
+        // 查询是否有缓存时间，有则返回
+        Date cachedDate = (Date) redisUtils.get(RedisKeys.getAgentDeviceLastConnectedAtById(agentId));
+        if (cachedDate != null) {
+            return cachedDate;
+        }
         List<Date> list = deviceDao.getAllLastConnectedAtByAgentId(agentId);
-        return Collections.max(list, Comparator.comparing(Date::getTime));
+        Date maxDate = Collections.max(list, Comparator.comparing(Date::getTime));
+        // 将结果存入Redis, 存储设备最近最后连接时间，和设备数量
+        redisUtils.set(RedisKeys.getAgentDeviceCountById(agentId), list.size(), 60);
+        if (maxDate != null) {
+            redisUtils.set(RedisKeys.getAgentDeviceLastConnectedAtById(agentId), maxDate, 60);
+        }
+        return maxDate;
     }
 
     private String getDeviceCacheKey(String deviceId) {