Four ways to improve fat survival: I. The method of aspiration must be chosen. The method of aspiration of fat tissue during surgery directly affects the outcome of the procedure. Second, the selection of the donor area for autologous fat augmentation. Try to choose the thighs, where the fat activity is higher. Third, the injection method. The principle is to evenly disperse the fat in the tissue of the recipient area by scattering the fat in multiple points, and the level of injection should be subcutaneous and posterior mammary gland gap. Fourth, the purification process of fat particles and extraction of high quality fat.