diff --git a/apps/enp/tasks.py b/apps/enp/tasks.py
index ab8fcc63..9288b4b2 100644
--- a/apps/enp/tasks.py
+++ b/apps/enp/tasks.py
@@ -19,7 +19,7 @@ def generate_envdata():
     for equip in equips:
         default_dict = {"equipment": equip, "timex": now, "running_state": 10}
         equip.running_state = 10
-        equip.save()
+        equip.save(update_fields=["running_state"])
         if equip.cate and equip.cate.code in ["cems", "aqms", "tsp"]:
             if equip.cate.code == "cems":
                 dust_rtd = random.uniform(0.1, 0.3)