Prosthetic chin pad surgery is cosmetic surgery. In addition, the prosthesis pad chin can accurately make a minimally invasive incision in the oral cavity, completely avoiding the problem of external skin leaving scars. It can fundamentally solve all kinds of serious mandibular widening problems and easily narrow the appearance of both sides of the face. The masseter muscle and buccal fat pad are removed as needed, and the curvature of the side surface is smooth under the condition of ensuring safety, forming a real "melon face".