Lap-band has certain effects on the fetus, there may be good effects such as protecting the fetus, maintaining normal fetal position, etc., and bad effects such as restricting the growth of the fetus cannot be ruled out. 1. Protecting the fetus: lap-band can support the abdomen of pregnant women, relieve the pressure on the waist of pregnant women, so that pregnant women with back pain, pelvic pain can be relieved, and at the same time, for the larger stomach, need to support the stomach of pregnant women to provide protection for the fetus. 2. Maintaining normal fetal position: If the fetal position is breech to head position after treatment, the abdominal support belt can prevent the fetal position from becoming breech. It can also prevent the head position itself from changing to breech position. It plays a role in maintaining normal fetal position. 3. Restrict the growth of the fetus: in the middle and late stages of pregnancy, the fetus grows and develops faster, and if the lap-band is used too tightly at this time, it will lead to a reduction in the capacity of the abdomen, resulting in an increase in intra-uterine pressure, which restricts the growth of the fetus. Therefore, the lap-band may have a good effect on the fetus, or may limit fetal growth, it is recommended to pay attention to the use of the lap-band should be appropriate. If a pregnant woman experiences abdominal discomfort while using a lap-band, it is recommended that she seek medical attention in a timely manner and under the guidance of a doctor, complete the relevant examinations to determine the cause of the problem and treat the symptoms.