diff --git a/sf_machine_connect/controllers/controllers.py b/sf_machine_connect/controllers/controllers.py
index d8ed85c9..b427aa5c 100644
--- a/sf_machine_connect/controllers/controllers.py
+++ b/sf_machine_connect/controllers/controllers.py
@@ -1250,7 +1250,7 @@ class Sf_Dashboard_Connect(http.Controller):
                 cur.execute("""
                             SELECT * FROM device_data
                             WHERE device_name = %s
-                            AND device_state != '离线'
+                            AND device_state != '离线' AND process_time IS NOT NULL
                             ORDER BY time DESC
                             LIMIT 1;
                         """, (item,))