diff --git a/sf_machine_connect/controllers/controllers.py b/sf_machine_connect/controllers/controllers.py
index 32d43cb5..36a77191 100644
--- a/sf_machine_connect/controllers/controllers.py
+++ b/sf_machine_connect/controllers/controllers.py
@@ -201,7 +201,7 @@ class Sf_Dashboard_Connect(http.Controller):
                        SELECT time, device_state, program_name 
                        FROM device_data 
                        WHERE device_name = %s AND time >= %s AND time <= %s 
-                       ORDER BY time ASC;
+                       ORDER BY time DESC;
                     '''
                 # 执行SQL命令，使用参数绑定
                 cur.execute(sql, (item, begin_time, end_time))