Tin belongs to metal. Putting it in the microwave oven not only has low heating efficiency, but also produces some sparks. The oven is heated by the heat radiation of the heating pipe, which belongs to the traditional heating method and is suitable for using aluminum foil paper. The tin foil will catch fire soon after heating, which will lead to a short circuit in the microwave oven. If not handled in time, it will damage the microwave oven.