The invention relates to the technical field of food processing, in particular to healthcare tofu and a preparation method thereof. The healthcare tofu is mainly prepared from the following raw materials in parts by weight: 80 to 100 parts of soybeans, 30 to 40 parts of black soybeans, 35 to 45 parts of mung beans, 30 to 40 parts of red beans, 15 to 20 parts of cucumbers, 15 to 20 parts of wax gourds, 15 to 20 parts of chayote, 15 to 20 parts of snow pears, 15 to 20 parts of apples, 5 to 7 parts of fructus crataegi, 10 to 20 parts of kelp, 6 to 8 parts of herba menthae, 7 to 10 parts of radix angelicae dahurioae, 2 to 3 parts of red pepper extract, 2 to 3 parts of sorbitol and 3 to 5 parts of coagulator. The preparation method of the healthcare tofu comprises the following steps: grinding into milk, mixing, curding, shaping and the like. The healthcare tofu disclosed by the invention is rich in raw materials, fine and tender in taste, strong in fragrance, rich in nutrients, easy to absorb and comprehensive in healthcare functions, has the healthcare effects of promoting digestion, maintaining beauty, keeping young, reducing blood sugar, reducing blood fat, clearing away heat and toxic materials, generating body fluid, quenching thirst and the like, and is a kind of healthcare green food.