Self-heating convenience foods have become popular. Putting a heating pack in the outer container and adding cold water can generate steam and heat foods of various tastes. Dezhuang hot pot and self-made hot pot use aluminum foil container made of era aluminum foil instead of plastic container to reduce heating time; aluminum foil is resistant to high temperature, safe and hygienic, avoiding the safety hazard of high temperature harmful substances in plastic box; aluminum foil can be recycled, which reduces environmental problems. The matching package and food packaging are also packaged in aluminum foil, which can effectively protect the flavor of the product and extend the shelf life of the product.