After several years of carefree childhood, girls and boys enter another important developmental stage of life, DD puberty, around the ages of 9 and 11, respectively. This is a period of fully accelerated growth and development. In the span of 2-3 years, children experience dramatic changes in secondary sexual characteristics, height, stature, and psychology. The former hairy child becomes a handsome boy and a pretty girl in the blink of an eye. Here, we will mainly talk about the height growth of adolescent children. Before puberty, the height and growth rate of boys and girls are basically similar. Children grow fastest in the first two years of life, increasing by about 25 cm in length in the first year, and then growth slows down, with height increasing at a rate of 5-7 cm per year until puberty. During puberty, both boys and girls will experience an accelerated rate of height growth, which can increase by 7-12 cm per year. boys experience peak growth rates 2 years later than girls, so it is entirely possible for girls to exceed the height of boys of the same age between the ages of 10 and 12. However, because boys begin to develop puberty at a higher height than girls before puberty, the final adult height is often about 12 cm taller for boys than for girls. In children in Western countries, boys and girls gain an average of 28cm and 25cm respectively during puberty, and domestic children can increase their height by 21-28cm during puberty. Generally, girls have reached their peak growth rate 1 year before menarche, and after menarche, height increases are limited, ranging from 1cm-7cm, and most girls can only increase by 3-4cm. boys’ final height seems to be related to puberty The early onset of puberty seems to be related to the late onset of puberty. The earlier the onset of puberty, the greater the remaining height gain; the later the onset of puberty, the more limited the height gain. In fact, the age of menarche, the onset of puberty, and the rate of maximum growth spurt are not good predictors of final height; only the duration of puberty is the most important factor in determining adult height. If puberty is excessively early (also called “precocious puberty”), the height of the patient increases significantly in a short period of time. However, because the height before puberty is too short, the early onset of puberty can lead to a significant decrease in the patient’s final height. In contrast, if puberty appears later or puberty is prolonged, it will lead to an increase in final height. In conclusion, accelerated height growth is one of the main signs of changes in the body during puberty. Parents should carefully observe and record the height change every year, as well as increase nutrition and sleep, and provide adequate psychological support, so that the adolescent child can develop and mature fully both physically and psychologically.