Chronic cervicitis is a common gynecological condition. The incidence of chronic cervicitis accounts for 60-80% of women of childbearing age, and the most common pathological manifestation is cervical erosion. The need for treatment: severe chronic cervicitis can be complicated by pelvic inflammatory disease, adverse pregnancy outcomes and cervical carcinoma. Currently, laser, freezing and microwave methods are mainly applied to denature, necrotize and detach cervical erosion lesions through cold or thermal effects, which eventually lead to treatment. All these methods are for celiac disease to be treated from outside to inside, and the surface epithelium is covered faster, but they are not effective for the treatment of cervical hypertrophy, and the side effects such as large amount of vaginal discharge, crusting off and bleeding after treatment are large and the recurrence rate is high. The advantages of ultrasound focusing treatment for chronic cervicitis: it breaks through the traditional “outside-in” treatment mode and is a new treatment mode of “inside-out” (improving the soil where the disease occurs), with accurate positioning, thorough treatment, low recurrence rate, and the surface layer of tissue remains intact after treatment. After treatment, the surface tissues remain intact, with only transient congestion and edema, and the postoperative recovery is more in line with physiological regression, with small side effects, no scar formation after treatment, without affecting normal physiological functions, and good environmental performance, without endangering the operator.