The main ingredient of back milk tea is malt, which has the effect of returning milk, generally drinking back milk tea for 3-5 days can be effective, but the specific role of the play needs to strictly comply with various precautions, not just drink back milk tea can be effective. The main reason is that the sucking of young children will stimulate the pituitary gland to secrete prolactin again, resulting in milk secretion; 3. 3. Avoid eating foods rich in fats and proteins and forbid drinking a lot of soups, such as chicken soup, fish soup and mutton soup, and reduce the chance of close contact with children. Milk return: Under the guidance of doctors, you can return milk through drugs, such as bromocriptine, vitamin B6, etc., which can be supplemented with Chinese herbal medicines such as grain buds and malt in water to inhibit the secretion of lactogen; 2. Natural milk return: Lactating mothers can return milk by reducing the number of times and quantity of babies sucking on the breast and shortening the time of breastfeeding. Eat foods that can return milk, such as malt, barley tea, raw hawthorn, etc.