The purpose of the lap band for cesarean section is to prevent uterine prolapse and abdominal laxity, and to maintain the body shape and so on. 1. Prevent uterine prolapse: after cesarean section, it takes some time for the uterus to recover, and the use of a lap band can speed up the contraction of the uterus and prevent uterine prolapse. 2. Preventing abdominal wall relaxation: C-section will cause damage to the abdominal wall, and local relaxation is easy to occur after the wound recovers. Lap band can tighten the local muscles, thus preventing the occurrence of abdominal wall relaxation. 3. Maintain the body shape: the lap band can also reduce the accumulation of fat in the abdomen, which can avoid local fat and maintain the body shape. However, after cesarean section maternity belts should pay attention to the use of time, avoid prolonged use, and do not tie too tight, otherwise it may compress the stomach, affecting eating. Promptly go to the hospital when uncomfortable symptoms occur, seek medical help.