Breast augmentation incision selection can generally be chosen from the axilla, areola, and inframammary fold. I. Convenient breast implants Principle: It is the method that has been carried out for the longest time and with the most experience in the world. High quality silicone gel implants are implanted under the pectoralis major muscle through the axillary or areolar incision to achieve breast augmentation. The current push from dual plane breast augmentation is that the upper edge of the implant placement is located under the pectoralis major muscle and the lower edge is located under the subcutaneous tissue, which can avoid the displacement of the implant due to the contraction of the pectoralis major muscle and asymmetry, by cutting off part of the muscle fiber at the lower outer edge of the pectoralis major muscle. Advantages: wide adaptation, large choice, cheap, the prosthesis has a supporting role, can correct mild breast sagging. Disadvantages: requires a certain incision and extensive subpectoral stripping of the pectoralis major muscle, requires several days of recovery and forced body position, internationally recognized contracture of the pericardium of about 5%, and shadowing under x-ray. It will affect the physical examination. Second, natural autologous fat breast augmentation Principle: Draw fat from other parts of the body, and after special treatment, select superior fat particles are injected into the breast to achieve breast augmentation. After the initial period of plasma nutrition, the fat cells implanted in the breast are re-vascularized under the action of biological factors in the body, and reconnect with the surrounding tissues to rebuild the blood supply and achieve complete viability. During this process, some of the inactivated fat cells are engulfed and absorbed by the surrounding group. Advantages: no incision, little pain, long-term stability, no fear of foreign bodies, natural as self-development, no artificial traces left behind, undetectable by medical instruments, can improve body curves at the same time. Disadvantages: High technical conditions are required, there is a safety limit for the amount of single transplantation, and multiple surgeries are needed for huge busts. Fat breast augmentation is the dream and problem of physicians for a hundred years, the surgery is not simply pumping fingers and injecting, high absorption is an unavoidable phenomenon.