Tin foil paper can't be put into the microwave oven because tin is a metal. Putting tin foil in the microwave oven is not only inefficient, but also produces some sparks, which is very dangerous and easy to cause fire, which will do great harm to the microwave oven, so tin foil can not be put in the microwave oven. Do not put containers made of common metal materials such as stainless steel, iron, copper, aluminum, etc. in the microwave oven, otherwise the microwave oven may explode and even cause a fire. Tin foil belongs to metal, and no metal can be put into the microwave oven, because it contains metal, so it can't. It is forbidden to use metal utensils in the microwave oven, because if iron, aluminum, stainless steel, enamel and other utensils are put into the oven, they will generate electric sparks and reflect microwaves, which will not only damage the furnace body, but also heat cooked food.

Therefore, when people use the microwave oven, don't put tin foil in it to heat it.