1. The earlobe is rich in autologous fat, fat particles are easy to obtain and tissue sources are rich. 2. Autologous fat-rich earlobe will not cause changes in the endocrine environment of human body, will not cause damage to the tissue of the injection site itself, and will not have adverse effects on future life. 3. The earlobe is rich in autologous fat. Because it is autologous tissue, its biological characteristics are far superior to any prosthetic material, so it is non-toxic and harmless to itself and will not produce immune reaction and rejection.