Gastric volume reduction is also called gastric volume reduction. Usually, a small incision is made on the left side of the gastric inlet. There are no blood vessels or nerves in this place. From the left side of the stomach, the unstructured posterior wall of the stomach leads to the right side of the stomach with a guide rod. At this time, the belt is put into the abdominal cavity through the puncture hole, and the belt is put into the posterior wall of the stomach through the guide rod. In order to ensure the accuracy of the gastric sac, put a container, pump 15 ml water into the container, and tie a belt under the water sac. In this way, the operation can be completed without damaging any peripheral blood vessels and nerves of the digestive tract or the outer wall of the stomach. The cost is about 10 thousand, plus the gastric band At present, the band is about 20 thousand to 30 thousand, so it adds up to about 45 thousand.