Uterine cavity diseases have a serious impact on women's reproductive function and physiological health，and have become an increasingly important topic of concern in gynecological clinical practice，fertility regulation，and assisted reproductive technology. Hysteroscopy is performed through natural channels for direct diagnosis and minimally invasive treatment of uterine cavity diseases. It is widely used in the diagnosis and treatment of various uterine cavity occupying lesions，endometrial lesions，uterine injury diseases，uterine malformations，and early endometrial malignant tumors due to its precise positioning，unlikelihood in missing small lesions，effective protection of normal endometrium and muscle wall tissue while removing lesions，achieving the goal of preserving organs and protecting functions. It is known as a minimally invasive method and standard procedure for the diagnosis and treatment of uterine cavity diseases. In recent years，with the increasing attention to uterine cavity diseases and the development of uterine cavity reconstruction surgery，how to control the standardization of clinical diagnosis and treatment to promote it in an orderly manner，pay attention to individualized surgical choices for different populations，perform perioperative management，and reduce surgical complications has become an urgent problem to be solved in clinical practice.