Hysteroscopic surgery is mainly applied to the examination and treatment of gynecological diseases of the uterine cavity, and it has a wide range of indications. Patients suspected of having any form of intrauterine pathology, or needing to make a diagnosis and treatment of intrauterine pathology, are indications for hysteroscopy. Abnormal uterine bleeding, excessive menstruation, excessive frequency, and uterine bleeding before and after menopause are all indications for hysteroscopy. Hysteroscopy is an examination modality that can confirm and localize lesions in the uterine cavity, as well as locate and biopsy suspicious areas for histocytological examination. Uterine abnormalities, uterine adhesions, submucous fibroids, endometrial hyperplasia, endometrial polyps, etc. are indications for hysteroscopic surgery. As a treatment modality, hysteroscopic surgery can be performed for endometrial polyps through the uterine cavity for polypectomy; for submucosal fibroids with or without stumps, or interstitial fibroids protruding into the uterine cavity can be resected through hysteroscopy; and congenital malformations in the uterine cavity such as longitudinal uterine septum can be corrected through hysteroscopic electrocautery. In short, the types of indications for hysteroscopy are very many, if you need to do hysteroscopy, follow the clinician’s advice, the general time to do hysteroscopy or surgery must avoid the menstrual period, you need to be in the menstrual period within 3-7 days after the clean.