Puppet lines, i.e. corners of the mouth lines, whose removal methods include injectable fillers, surgery and radio frequency. Corner of the mouth lines, bilateral corners of the mouth downward and lateral extension of the wrinkles, mostly associated with skin laxity, obesity and bad habits. Currently, the following treatments are available for improvement: 1. Injectable filler: injectable filler means filling hyaluronic acid, collagen, autologous fat and other materials into the depression under the corners of the mouth to improve the corners of the mouth lines. 2. Surgery: Corner of the mouth lines are mostly caused by skin laxity, which can be removed by surgical methods, including buried wire lifting method, face lifting, and so on. 3. Photoelectric treatment: radio frequency, ultrasonic knife and other photoelectric treatment can promote the contraction and regeneration of elastic fibers and collagen fibers, which can form the effect of backward uplift to tighten the skin and improve the corners of the mouth lines. Patients who are willing to treat corneal lines are advised to go to regular medical institutions and under the operation of professional medical personnel.