Abstract: Morbid obesity and its accompanying diseases have become one of the most serious public health problems that the whole world needs to face together, and bariatric metabolic surgery is still the most effective method for long‑term weight control. Among all bariatric surgery procedures, sleeve gastrectomy is currently the most widely used, but it is not a perfect procedure. One of the most serious issue faced by this surgical procedure is the possibility of worsening existing or developing new gastroesophageal reflux disease after surgery. Moreover, there is currently a lack of high‑level clinical trial evidence on the diagnosis and treatment of gastroesophageal reflux disease in patients undergoing sleeve gastrectomy. Therefore, initiated by four domestic bariatric surgery centers, 41 experts from relevant fields in China, Japan, and South Korea reach the Shanghai Consensus of Chinese, Japanese, and South Korean Experts on the Diagnosis and Treatment of Gastro-esophageal Reflux Disease in Patients Undergoing Sleeve Gastrectomy (2024 edition) by using the Delphi method. There are a total of 59 consultation questions in this consensus, of which 44 have reached a consensus. It is hoped that this consensus can not only serve as a reference for clinical diagnosis and treatment, but also provide more possible directions for future high‑quality clinical research.