Soy products are a food source of high quality protein, which is easily digestible and contains a complete range of essential amino acids in sufficient quantity and proportion, easy to digest and absorb, and suitable for all ages. Regular consumption of tofu has the effect of lowering blood lipids and preventing cardiovascular diseases. Moreover, after soybeans are processed and made into tofu, the cellulose and anti-nutritional factors in soybeans are removed and the digestibility of protein is improved. Tofu is rich in calcium and contains isoflavones that prevent osteoporosis and slow down the aging of women. Even the best things are not suitable for everyone. Acute gouty arthritis period to prohibit large quantities of food, and not recommended to eat too much at a time, otherwise it will prevent the body’s absorption of iron, but also bloating, diarrhea symptoms. That’s why the Chinese Dietary Guidelines recommend that healthy adults consume 25g of soybeans per day, which translates into 70g of northern tofu and about 140g of southern tofu.