diff --git a/app/Services/EventCalendarService.php b/app/Services/EventCalendarService.php
index 06461db..9c79c90 100644
--- a/app/Services/EventCalendarService.php
+++ b/app/Services/EventCalendarService.php
@@ -61,14 +61,17 @@ class EventCalendarService extends BaseService
             $end_time = get_datetime('datetime', strtotime($data['end_time']));
 
             // 活动开始时间不能在已有活动时间内
-            $where = [
-                ['pattern_id', '=', $data['pattern_id']],
-                ['start_time', '>=', $start_time],
-                ['end_time', '<=', $start_time]
-            ];
-            if (EventCalendar::query()->whereIn('status', [0, 1])->where($where)
-                ->exists()
-            ) {
+            $exists = EventCalendar::query()->whereIn('status', [0, 1])->where(
+                'pattern_id',
+                $data['pattern_id']
+            )
+                ->where(function ($query) use ($start_time) {
+                    $query->whereRaw(
+                        "'{$start_time}' BETWEEN start_time AND end_time"
+                    );
+                })
+                ->exists();
+            if ($exists) {
                 throw new Exception(
                     __('service.event_calendar.pattern_exists')
                 );