The CMH (the Corrected Midparental Height) method, in which the average parental height of 10.5 cm is the target height for boys and the average parental height of 6.5 cm is the target height for girls, has been widely used in pediatric practice. This method has been commonly used since the 1970s. The specific formula is: Boy = (father’s height + mother’s height + 13)/2±8CM Girl = (father’s height + mother’s height – 13)/2±8CM As the standard of living in China has improved significantly in recent years, many of the previous generation may have not received more timely and effective treatment due to inadequate nutrition or disease when they had adequate height growth, the adult height of children nowadays is often higher than the genetic height. Some scholars have proposed a new way of calculating target height, FPH (the Final Height for Parental Height) method through sufficient research, which has been verified in some domestic areas and proved to be more accurate and reasonable, and thus has now replaced the CMH method mentioned earlier. The formula for the FPH method is: Boy = 45.99 + 0.78 x (father’s height + mother’s height) ÷ 2 ± 5.29CM Girl = 37.85 + 0.75 x (father’s height + mother’s height) ÷ 2 ± 5.29CM Here we need to remind you that: ① the formula is statistically processed, only about 95% of normal people are in this range, not necessarily everyone can reach; ② The calculated median value is followed by ±5.29 CM, which means that it may be higher or lower than the median value; ③ Genetic height is only the range of adult height that a perfectly normal person should achieve, and it does not mean that all children can achieve it. Never disregard your child’s growth and development because the calculated genetic height is still acceptable. Dwarfism is also a disease, and from time to time, children of parents who are both tall will be short, because just because the parents are tall does not mean that the child will never have a disease such as growth hormone deficiency; ④ Do not be too pessimistic if the parents are short. Some diseases can be checked and effectively treated now, and if the child has the same disease, it is possible to achieve a more ideal lifelong height through checkups and treatment; ⑤ Due to the improvement of living standard nowadays, sex hormones in food are inevitable from time to time, and sex hormones in health care products are even more common. In addition to the stimulation of too much bad information, the development of children is generally early, and precocious sexual maturity has also increased significantly. You can’t ignore your child’s development because he or she is still tall or high. When you are precocious, your height is often higher than that of your peers, but you will stop growing early, so your height may be shorter in the future. Once puberty is over, the growth will stop and no treatment is possible. (6) The most accurate method of predicting adult height is through accurate assessment of bone age. This is because only the parents’ height is taken into account when calculating genetics, not the child’s current height and bone age at the time. If the bone age is greater than age, there will be less room for later growth and the adult height will be lower, while if the bone age is less than age, there will be more room for later growth and the adult height may be higher. Since bone age is the physiological age of a person, it should match the current actual age. If the difference is too large, it is often due to disease and requires prompt examination and treatment. (7) First in Japan, and now also in Taiwan and some Western European countries, free bone age films are taken every two years for all children and adolescents during their growth period, so that abnormalities in growth and development can be detected and treated in a timely manner, which is worthy of reference for the country.