If you find that your child is growing slower and shorter than the children around you of the same age and gender, you should consult your doctor as soon as possible to find out whether your child is of average height or short height by using your child’s growth scale. If your child grows less than 25cm in the first year, less than 10cm in the second year, and less than 5cm per year from the age of 2 until puberty, you should seek medical advice. For growing children, parents should keep track of how much their child grows each year. If there is no measurement and the child’s pants are not short for several years, there must be a problem as well. The children with precocious sexual development or early puberty will be accompanied by early bone age, which may lead to the phenomenon of “tall children” and “short adults”. The reality is that many children are taller than their peers in elementary school, and parents never think that their children will have height problems. But in middle school or high school, the child’s growth rate gradually decreases and he or she gets further and further ahead in the class line, and if he or she comes back to the doctor at that time, the child’s epiphysis may have closed or be close to closing. In other words, the child’s undesirable height at the time of the doctor’s visit may be his lifelong height. Therefore, premature growth may be a sign of early bone age.