Thousand-page tofu is a new vegetarian product made of soy protein isolate and water as the main raw materials, supplemented by edible vegetable oil, starch and other auxiliary materials, with or without stabilizers, coagulants and thickeners, and processed through all or part of the processes such as chopping, emulsifying, seasoning, cooking, cooling, dicing or refreezing. Although it belongs to bean products, it is not tofu and tofu products, and its raw materials, production technology, physical and chemical indicators, internal organizational structure, product taste, nutritional components and so on are essentially different from tofu.