Usually, the body of boys in the voice change period grows faster than in other periods, mainly due to the fact that boys in the voice change period are at the stage of puberty, when the secondary sexual characteristics begin to develop. With the voice changes and testicular enlargement, the body’s growth hormone secretion will also increase, thus accelerating bone growth, that is, rapid growth in height. When the boy is in the voice change period, need to pay attention to strengthen the nutrition such as drinking more milk, increase the intake of high-protein food, including lean meat, eggs, seafood such as fish, shrimp, crabs, etc., and suggest that the boy more increase the exercise, in order to promote the growth of height.