diff --git a/sf_machine_connect/controllers/controllers.py b/sf_machine_connect/controllers/controllers.py
index 2972345f..3b83cf2c 100644
--- a/sf_machine_connect/controllers/controllers.py
+++ b/sf_machine_connect/controllers/controllers.py
@@ -1327,8 +1327,8 @@ class Sf_Dashboard_Connect(http.Controller):
                 cur.execute("""
                             SELECT * FROM device_data
                             WHERE device_name = %s
-                            AND device_state in ('待机', '警告', '运行中') AND time >= %s AND process_time IS NOT NULL
-                            ORDER BY time ASC
+                            AND device_state in ('待机', '警告', '运行中') AND time <= %s AND process_time IS NOT NULL
+                            ORDER BY time DESC
                             LIMIT 1;
                         """, (item, time_threshold))
                 last_24_time = fetch_result_as_dict(cur)