Some people may not be aware that in addition to gastrectomy for weight loss surgery, there is another early procedure – gastric banding. Gastric banding is a laparoscopic procedure in which a silicone band is placed over the upper part of the stomach and can be adjusted for tightness by injecting water. However, this procedure has now been replaced by sleeve gastric surgery and gastric bypass surgery, and has become an obsolete procedure in bariatric surgery. Why is this? Gastric banding has been eliminated because it has more complications than other procedures and has been found in clinical studies over the years to have less long-term weight loss than the two aforementioned procedures. Common complications of gastric banding surgery include: 1. Nausea and vomiting are the most common complications in the first year after surgery. Nausea and vomiting in the immediate postoperative period are mostly caused by reactions to anesthetic drugs, tight banding, postoperative edema of the gastric wall or improper placement of the banding, etc. In the later period, they are often caused by patients eating too quickly and excessive water injection into the gastric banding. In our hospital, the gastric tube is routinely left in place for 24 hours after surgery, and after the upper gastrointestinal tract is confirmed to be appropriately positioned by pantopamine imaging and there is no outflow tract obstruction, the gastric tube is removed and a liquid diet is fed. 2, incisional infection: obese patients with thick abdominal fat, surgery is easy to form fat liquefaction necrosis, local infection foci formed, at the same time, because patients are mostly combined with diabetes, easy to cause secondary infection. Can take preventive use of antimicrobial, subcutaneous as little as possible to use electric knife, postoperative strict control of blood sugar and other measures to reduce the incidence of incisional infection. 3, gastric band/injection pump displacement: mostly caused by unsatisfactory intraoperative gastric band/injection pump encapsulation and fixation, can be fixed and encapsulated through the exact intraoperative gastric band/injection pump to reduce its incidence. 4, gastric bursa dilatation: Mostly due to the large volume of the gastric bursa left in place during surgery and inaccurate fixation of the band. Intraoperative control of the volume of gastric bursa to 10-15 ml through adjustable gastric catheter and simultaneous exact encapsulation of gastric band is the fundamental measure to reduce the dilatation of gastric bursa. Finally, for fat people who want to do weight loss surgery: please choose a mature and regular weight loss surgery team, because weight loss surgery requires a professional doctor to assess your personal situation to choose the right weight loss surgery for you.