It is useful for simultaneous diagnosis and treatment of patients with unexplained uterine bleeding, patients with menopausal women with excessive menstrual periods for whom drug treatment is ineffective, patients with suspected cervical disease, patients with embryonic residues in the uterine cavity after abortion, patients with infertility, patients with scar pregnancy, and patients with suspected uterine polyps, patients with submucosal fibroids, and patients with suspected uterine adhesions after abortion with scanty menstruation or amenorrhea. Patients with abnormal menstruation after cesarean section can also undergo hysteroscopy to rule out depression or diverticulum formation in the lower uterine scar. Patients with excessive menstruation due to tamoxifen use after breast cancer prophylaxis, and patients who are re-explored 3 months after uterine adhesion release Hysteroscopic surgery is easy to perform with minimal side injuries, and patients recover quickly after surgery and can eat and drink normally two hours after surgery.