Thick lips are usually defined as the thickness of the upper lip greater than 8mm and the thickness of the lower lip greater than 9mm.If a thick lip exists, it can be treated with thick lip reshaping surgery. There are also many methods of thick lip thinning surgery, such as the pike design wedge excision method, the bilateral crescent excision method, and the M-shaped excision method. Although thick lip thinning surgery is a relatively simple and safe plastic surgery, and the current plastic surgery technology is also more mature, there are generally no after-effects. However, thick lip thinning surgery is after all an invasive operation, there may be certain risks: 1, infection: may be due to improper post-surgery care and other factors, resulting in wound infection. If this happens, it is recommended to go to the hospital in time for remedial treatment; 2. Swelling: due to the loose and vascular lip tissue, swelling is likely to occur after thick lip thinning surgery, which generally does not require special treatment and can subside on its own within 3-4 days after surgery, and can usually subside in about 2 weeks for longer cases; 3. Hematoma: trauma may lead to bleeding from vascular damage and hematoma; 4. Soft: If the incision is not fixed properly when the thick lip thinning surgery is performed, the incision can be untidy and can be corrected by re-operation; 5, teeth exposed when the mouth is closed: this can be caused by removing too much lip red tissue during the thick lip thinning surgery; 6, unsatisfactory appearance: too much or too little removal and bilateral asymmetry.