Generally speaking, although microwave ovens can use plastic containers, they must be dedicated to microwave ovens. If it is ordinary plastic, it will release toxic substances, pollute food and endanger human health.
Metal utensils should not be put into the microwave oven. When iron, aluminum, stainless steel, enamel and other utensils are put into the oven, the microwave oven will produce electric sparks and reflect microwaves, which will not only damage the furnace body, but also cause some bad phenomena when heating food.
Don't use closed containers in the microwave oven. If some containers are heated by microwave oven, it is easy to cause excessive pressure in the containers and explosion accidents. Even if you cook food with shells, you should pierce the shells with needles or chopsticks in advance to avoid bursting after heating, splashing out to pollute the furnace wall or hurting people.
Food is thawed or heated in the microwave oven. If you forget to take it out for more than two hours, you should throw it away to avoid food poisoning.