diff --git a/apps/enm/services.py b/apps/enm/services.py
index eb2f1397..77399bc7 100644
--- a/apps/enm/services.py
+++ b/apps/enm/services.py
@@ -207,6 +207,8 @@ class MpointCache:
                 set_eq_rs(ep_belong_id, timex, Equipment.OFFLINE)
 
     def set(self, last_timex: datetime, last_val):
+        # last_timex保存到秒
+        last_timex = last_timex.replace(microsecond=0)
         current_cache_val = self.data
         cache_key = self.cache_key
         last_data = current_cache_val["last_data"]