Boys entering early puberty are mainly characterized by increased secretion of androgens, the appearance of secondary sexual characteristics, rapid growth in height, and psychological changes. 1. The secretion of androgen gradually increases, and secondary sexual characteristics begin to appear: mainly testicles and penis begin to enlarge, axillary hair and pubic hair begin to appear, the laryngeal knot begins to get bigger, and the voice begins to become thick and so on. 2. Rapid growth in height: before puberty, the height of boys maintains the same growth rate, and after puberty, the growth rate of height increases significantly faster than before. 3. Psychological changes: the boy’s psychology began to become more sensitive, there is a feeling of wanting to get rid of parental dependence, the psychological easier to impulse. Warm tips, the boy appeared the above performance, said the boy began to enter the early puberty, which requires parents to pay attention to the child’s physiological changes and psychological changes in a timely manner, if necessary, to make the correct guidance.