摘要子宫内膜异位症是生育年龄妇女的常见病、多发病。子宫内膜异位症诊治指南对于临床诊疗意义重大。距离2015年第二版“子宫内膜异位症的诊治指南”的发布已有6年，需要适时更新。中华医学会妇产科学分会子宫内膜异位症协作组和中国医师协会妇产科医师分会组织全国专家对“子宫内膜异位症的诊治指南”进行了修订。本次指南修订中对2021年1月以前发表的临床研究进行了检索和评估，对诊治指南中临床证据尚不充分的部分采取了专家组讨论后推荐的形式。本次指南修订旨在为临床诊疗提供指导，提高我国子宫内膜异位症的诊治水平，更好地为患者服务。

abstractsThis is the third edition of guideline for the diagnosis and treatment of endometriosis in China. The second edition was published six years ago in 2015. It has been an important reference for the best clinical care of endometriosis and is now in need of updating. Using modern methodology including thorough systematic search of the literature, quality assessment of the identified papers up to January 2021. Experts in the field have worked together and reached a consensus on recommendations. It is apparent that robust evidence was lacking to support best management of several issues of endometriosis. Therefore, the good practice points (GPP) are based on expert experience and opinion. This new guideline provides recommendations for doctors on diagnosis, medical and surgical treatment of endometriosis-associated pain and infertility, prevention of recurrence, the management of adolescents and peri-menopausal women, issues of endometriosis associated malignancy, as well as patient education.