After the birth of a baby is the need to use a restraint belt, the use of postpartum belts are mainly the following: first, to prevent the organs from sagging, fixed internal organs. When pregnant, due to the obvious increase in the size of the uterus, occupying the pelvis and most of the abdominal cavity, will lead to intestinal tubes and other organs, squeezed to another location in the abdominal cavity, when the baby is delivered, the uterus quickly shrinks, these organs have to return to their original position, then the restraint belt can play a role in fixing the viscera, to prevent the organs from sagging. Secondly, it can fix the gauze of the wound. After the patient of cesarean delivery goes back to the ward, he has to tie the lap band, and the lap band can fix the abdominal wound, and at the same time, it can compress the wound to stop the bleeding. Third, it can strengthen the support of the waist.