A ski includes a ski main body and two shock resistant protecting plates attached to front and rear ends of the main body. The protecting plates are made of material having high structure strength and high hardness. The ski main body forms a front mounting slot and a rear mounting slot. One protecting plate is mounted in the front mounting slot with an outer portion thereof extending out of the front mounting slot, and the other protecting plate is mounted in the rear mounting slot with an outer portion thereof extending out of the rear mounting slot. The provision of the protecting plates improve shock resistance of the ski. The protecting plates are assembled to the ski main body using special method to form a united member, thus providing the ski with both good appearance and high shock resistant, and can be employed in skis of any kind and specification.