It can be used one month after delivery, and two months after delivery is the best. It is best to let the body recover naturally before using it, because the tummy belt or body shaping underwear has certain pressure on the body, which can tighten fat and loose meat. After giving birth, the child is weak, and the function needs to be restored naturally, which is healthier for the internal function of the body. Postpartum women should exercise properly and don't stay in bed for a long time. Qin Ying turned over in the first two days after delivery. Sit up while eating. Get out of bed in two days. Second, in diet, drink more soup and water. The daily diet should be properly matched with a certain proportion of coarse grains, so that coarse grains can be matched with flour and rice, and the staple food should be diversified. While eating meat and eggs, we should also eat some fresh vegetables and fruits with more cellulose. Third, we should always be cheerful, feel comfortable and avoid bad mental stimulation, because bad emotions will reduce the secretion of gastric acid.