Calculating height based on heredity is done using the genetic height formula: boy’s height = (father’s height + mother’s height + 13)/2, girl’s height = (father’s height + mother’s height – 13)/2. The height of a child is indeed related to the height of its parents. According to relevant surveys, it has been proved that genetic factors do influence the height of a child’s height. However, genetic predisposition is not the only factor that affects height. It is also affected by many acquired factors such as dietary habits, physical exercise and psychological factors. When the child is in the growth period, the diet should pay attention to eat a balanced diet, intake of calcium and high quality protein; exercise more such as basketball, jumping rope and other bouncing activities; family parents should also pay attention to the child’s mental health development in adolescence in a timely manner, to create a good family atmosphere.