There are several ways to repair the engine hood that has been pitted by stones: 1. Check the depth and size of the pit. The front cover of a car is made of metal. If it is a stone, the pit is too big and generally broken and needs to be replaced; If the pit is not too serious, you can go to the garage to repair it. Car touch-up paint is calculated by surface. Although only a small part of the front cover was broken, the whole front cover was repaired. The maintenance union removed the paint, flattened the pit with metal pieces and repainted it. 3. Self-touch-up paint treatment. The front cover is made of metal. If the paint of the car is smashed, the metal parts will rust after a long time, and even rust will leak in. You can buy a touch-up pen to repair it for me.