The convenience food with high tolerance in the production line of puffed self heating rice has been widely accepted by consumers. Self heating rice contains rice grains, heating packs, vegetable packs, sauce packs, purified water, and knives and forks. Rice grains are made by extruding rice grains and then drying them multiple times. Their shape and taste are very similar to real rice. Vegetables, fruits, medicinal herbs, etc. can also be added to make vegetable rice, fruit rice, and functional medicinal rice. Our company's self heating rice granule production equipment technology has successfully cooperated with multiple enterprises. The production methods include mixing, extrusion molding, baking, re baking, cooling, and packaging.