The uterus is an important part of the female reproductive organs and is inseparable from the female whole. Uterine diseases are common among women, including various female genital tumors, menstrual disorders, female genital inflammation, female genital injuries, female genital malformations, and other female genital diseases. The incidence of uterine diseases is increasing year by year, among which uterine fibroids, adenomyosis and dysfunctional uterine bleeding (gonorrhea), cervical erosion and acromegaly are common gynecological diseases. About 1/4 of women of childbearing age are affected by various uterine diseases, especially excessive menstruation, which affect normal life and work. Self-coagulation knife treatment principle: radiofrequency electromagnetic waves are intervened to the disease site through the self-coagulation knife, which causes local tissues to produce high heat effect until coagulation degeneration, necrosis and achieve the purpose of treatment. Self-coagulation knife technology is in line with the direction of medical technology research: safe, effective, minimally invasive, convenient and valuable, with a variety of medical features, she can treat both uterine bleeding and uterine fibroids, as well as various cervical diseases. In the treatment of uterine fibroids, according to the different parts of the uterus where the fibroids grow, self-coagulation knife can play different advantages. It can assist laparoscopy in the treatment of subplasma fibroids, assist hysteroscopy or be used alone in the treatment of submucosal fibroids. For uterine bleeding, self-coagulation knife can perform endometrial ablation treatment, which is simple, safe, short, less painful, less reactive, and reliable, and is now called the second generation of uterine cavity treatment technology.