Girls with small breasts, if they are in the developmental period, they can promote the development of breasts by adjusting the diet, more exercise, massage and so on. If it has passed the period of breast development, it can be improved through medical methods. 1. Developmental period: women with small breasts during the developmental period can eat more protein-rich food, protein can promote muscle synthesis. And in the developmental period should also increase more exercise, such as stretching exercise, chest expansion exercise. At the same time, you should also massage your breasts, massage can promote local blood circulation, which is conducive to breast development. 2. After the chest development period: If women with small breasts have passed the chest development period, they can not be improved through exercise, diet, massage, etc., and need to be filled with autologous fat, implants, and other medical methods to improve the problem of small breasts. If you need to do medical aesthetic surgery, you need to choose a regular medical aesthetic organization or a local public hospital, the safety will be higher.