Nowadays,obesity and its related diseases such astype 2 diabetes mellitus (T2DM) and metabolic syndrome (MS) have already become a serious social and medical problem.In addition to oral aitidiabeticdrugs,insulin injection and other traditional treatments,metabolic surgery has gradually been recognized in recent years.However,there are lack of adequate surgical data and evidence-based evidenceof metabolic surgeryin Chinabecause of its postoperative risks,complications and low body mass index in T2DM patients in China.This article summarizes the status and limitations of metabolic surgery.