The direction of the range hood is particular, because the position of the range hood should be selected according to the position of the stove to facilitate the suction and exhaust of the range hood. The position of the range hood should avoid facing the bathroom door, bedroom door and living room door, and avoid the lampblack directly rushing to the door and bathroom door. The position of the range hood should also consider the direction of exhaust, try to avoid the headwind and prevent the oil fume from flowing backwards.