diff --git a/sf_machine_connect/controllers/controllers.py b/sf_machine_connect/controllers/controllers.py
index 92dc99c7..a6eb4100 100644
--- a/sf_machine_connect/controllers/controllers.py
+++ b/sf_machine_connect/controllers/controllers.py
@@ -1298,7 +1298,7 @@ class Sf_Dashboard_Connect(http.Controller):
         conn = psycopg2.connect(**db_config)
         # 获取请求的机床数据
         machine_list = ast.literal_eval(kw['machine_list'])
-        time_threshold = datetime.now() - timedelta(days=1)
+        time_threshold = datetime.now().replace(hour=0, minute=0, second=0, microsecond=0)
 
         alarm_last_24_time = 0.0
         alarm_all_time = 0.0
@@ -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)
@@ -1348,20 +1348,21 @@ class Sf_Dashboard_Connect(http.Controller):
             alarm_last_24_nums = []
             with conn.cursor() as cur:
                 cur.execute("""
-                            SELECT DISTINCT ON (alarm_start_time) alarm_time, alarm_start_time
+                            SELECT DISTINCT ON (alarm_start_time, alarm_time) alarm_time, alarm_start_time
                             FROM device_data
                             WHERE device_name = %s
-                            AND alarm_start_time IS NOT NULL AND time >= %s;
+                            AND alarm_start_time IS NOT NULL AND alarm_start_time::timestamp >= %s;
                         """, (item, time_threshold))
                 results = cur.fetchall()
+                logging.info("results============:%s" % results)
                 for result in results:
                     alarm_last_24_nums.append(result[1])
                     if result[0]:
                         if float(result[0]) >= 28800:
                             continue
-                        alarm_last_24_time += float(result[0])
+                        alarm_last_24_time = float(result[0])
                     else:
-                        alarm_last_24_time += 0.0
+                        alarm_last_24_time = 0.0
 
             alarm_all_nums = []
             with conn.cursor() as cur: