Soymilk can be drunk during menstruation to replenish the body’s nutrients, but it should be avoided in large quantities to prevent intestinal flatulence. Soybean milk is usually made of soybeans, rich in vegetable protein, vitamins, calcium and other nutrients, and women in the period of the month of the body is poor, and the body of the nutritional elements of the lack of, therefore, in the period of the month of soybean milk, can supplement the body of the nutrients. However, during the period of sitting, due to the maternal gastrointestinal function is poor, should not drink a lot of soymilk, because after drinking a lot of soymilk, easy to cause intestinal flatulence, especially pregnant women undergoing cesarean section, when intestinal flatulence is too serious, it may affect the incision part of the recovery. Therefore, during the period of sitting, pregnant women should drink a moderate amount of soybean milk, but also to ensure adequate water intake, eat more fresh vegetables and fruits, to ensure balanced nutrition, to avoid affecting the recovery and milk quality.