It is recommended to do it after puberty, because adolescence mainly depends on eating well and adequate nutrition. You can choose fresh fish, chicken, eggs, liver, animal blood, lean meat, bean products, milk, pay attention to supplement protein, vitamins and various dietary fibers, and pay attention to a balanced diet, which may also have breast enhancement effect. Otherwise, after puberty, the only way is to have breast enhancement surgery. At present, there are many methods for breast enhancement, such as autologous fat transplantation and silicone prosthesis implantation. At present, the implantation technology of silicone prosthesis is relatively mature.