新型冠状病毒肺炎（COVID-19）具有人群普遍易感的流行病学特点，且肥胖患者因自身免疫力降低并常伴有多种代谢相关疾病，增加了疫情流行期间感染，及感染后出现危重症、甚至死亡的风险。当前情势严峻，中央正举全国之力遏制此次疫情，在此大背景下减重代谢外科无疑也面临着严峻挑战。如何在疫情期间减少肥胖人群感染概率、避免在院患者交叉感染、正确安全处理减重代谢手术后出现的各种并发症、保护相关医务人员的身心健康，都是摆在大家面前亟待解决的问题。对于医学发展而言，重大疫情的发生既是灾难，也有效推动医学进步与革新。减重代谢外科在应对挑战之余，寻找新的发展方向对本学科更具有重要意义。本文根据国家相关指南、最新文献和防疫工作中积累的经验，总结了COVID-19流行下减重代谢外科面临的问题与挑战，以及应对策略和发展方向，以期供同道参考借鉴。

The general population are susceptible to COVID-19. During the epidemic of COVID-19, obese patients are more susceptible to infection and have more possibility of serious or even death after infection, due to their metabolic diseases and lower immunity. The current situation is so grim that the central government is making great efforts to contain the epidemic. In this context, metabolic and bariatric surgery is undoubtedly facing severe challenges. How to reduce the infection rate of obese people, protect the patients in hospital from cross infection, deal with various complications after metabolic and bariatric surgery correctly and safely, and protect the physical and mental health of relevant medical personnel are all the problems that need to be solved during the epidemic period. For medical development, the occurrence of major epidemic is not only a disaster, but also an effective promotion of medical progress and innovation. In addition to the challenges, it is of great significance to find new developments for metabolic and bariatric surgery. According to the relevant national guidelines, the latest literatures and the accumulated experiences in epidemic prevention work, we summarized the challenges, countermeasures and developments to make a reference for staff of metabolic and bariatric surgery to fight with COVID-19.