In our country, the age group of 12-18 years old is generally regarded as puberty. Puberty is the second peak of human growth and development, with great physiological changes, rapid growth in height and weight, and maturation of organs, such as the heart, lungs, and liver, with all indicators reaching or approaching the adult standard, and puberty starts at the age of 12-14 years old for boys. The performance of male sexual development is firstly manifested in the increase of testicular volume, when the testicular volume exceeds 3ml or more, it marks the beginning of puberty, and when it reaches 6ml or more, the phenomenon of spermatorrhea can be experienced. Subsequently, the child’s penis begins to grow and thicken, pubic hair appears, there is the growth of armpit hair as well as a low voice, a long beard and other physical characteristics of adult males, and the whole process takes about five years or more. At the time of the appearance of secondary sexual characteristics, there is also rapid growth in height and weight. If a boy develops secondary sexual characteristics before the age of nine, precocious puberty needs to be considered. The development of sexual characteristics in children with precocious puberty is similar to the developmental sequence of normal puberty. Some can pause for a period of time after a certain level of sexual development before developing again, or they can reappear after the symptoms subside. Early children can be taller than children of the same age, but because of the overly rapid growth of the bones, can make the bone scale fusion too early, so the adult stature will instead be shorter. Adolescent boys should exercise moderately and maintain physical strength, such as walking, swimming, climbing stairs and playing tennis. To enhance self-confidence, usually to give up smoking and alcohol. In addition, discretionary increase in cashews, whole grain bread, eggs, tofu intake.