The use of belly bands is not recommended for sleeping. Prolonged use of belly band may lead to lymphatic reflux obstruction, affect sleep, increase the pressure in the abdominal cavity and other undesirable situations. 1. Lymphatic reflux obstruction: prolonged use of abdominal band may inhibit lymphatic reflux, lymphatic part of the reflux is not smooth, which leads to some of the toxins in the body can not be discharged in a timely manner, reduce resistance to cause localized edema. 2. Impact on sleep: the prolonged use of abdominal belts will lead to discomfort in the human abdomen, which may affect sleep. 3. Increase intra-abdominal pressure: prolonged use of lap-band may lead to increased intra-abdominal pressure, which may lead to uterine prolapse, anterior and posterior walls of the vagina bulge. To summarize, the prolonged use of lap-band has a greater impact on the human body. It is recommended that the lap-band should not be used for too long in one day, and it is recommended that the lap-band should be undone every 2 hours in the middle of the day to relax the abdomen, and there is no need to use the lap-band when taking a rest.