Chin pad is currently a very popular plastic surgery technology, the main role is to improve the shape of the face, to enhance the beauty value of the candidate. At present, the method of chin pad mainly includes prosthesis implantation, hyaluronic acid injection, autologous fat filling, the harm of each method is as follows: 1, injection of hyaluronic acid: this way is generally not harmful, no scar after the operation, and there is no pain and risk of surgery, no need for recovery after the operation, hyaluronic acid can be absorbed by the human body and metabolized normally. However, due to the problem of individual differences, hyaluronic acid injection may lead to allergies; 2, autologous fat filler: because the filler comes from their own fat, high compatibility, no reaction, and minimally invasive liposuction technology will not lead to bleeding, and the effect is natural after the operation. However, some candidates will need multiple surgeries to maintain the effect due to autologous absorption after fat transplantation. In addition, hazards such as fat clustering, liquefaction and calcification may occur; 3. Silicone chin pads: higher safety, but if there are problems with the doctor’s technique, it can lead to excessive bleeding. In addition, hardening of the chin as well as painful and itchy allergic symptoms may occur, which are related to the candidate’s individual physique.