diff --git a/internal/dao/sensor.go b/internal/dao/sensor.go
index 77d3cf3..8cf301a 100644
--- a/internal/dao/sensor.go
+++ b/internal/dao/sensor.go
@@ -79,9 +79,8 @@ func (dao *SensorDAO) GetAggregatedData(start, end time.Time, interval string) (
 	rows, err := dao.db.Query(
 		query,
 		intervalMinutes, intervalMinutes, // 时间桶计算参数
-		start, end,                       // 时间范围
-		intervalMinutes                   // GROUP BY参数
-	)
+		start, end, // 时间范围
+		intervalMinutes)
 
 	if err != nil {
 		logger.Logger.Printf("查询聚合数据失败: %v (间隔=%s, 开始=%s, 结束=%s)",