It is still possible for girls to grow taller after menarche, but there are individual differences. The onset of menstruation indicates that a girl has clearly entered puberty. After puberty, a child’s height can still continue to increase, but the amount of increase is still relatively limited. The exact degree of increase is also related to individual differences, age and bone age. Height growth is related to diet and nutrition as well as genetic and endocrine factors. For girls with precocious puberty, after the onset of menstruation, the amount of height growth is also relatively limited, the initial height may be higher but the later growth is slow, which may affect the final height, height will be lower than the normal level of the same age, so it is still necessary to observe the child’s age when the onset of menstruation to determine the height growth situation. If precocious puberty occurs, treatment is needed as soon as possible.