The future height of a child can be estimated by this formula: the height of a girl can be estimated according to (father’s height × 0.923 + mother’s height) ÷ 2, and the height of a boy can be estimated according to (father’s height + mother’s height) × 1.08 ÷ 2. Children’s height is greatly influenced by heredity, and the formula can be used to roughly project the child’s future height, but this formula is for reference only. Height by genetic influence is relatively large, but the influence of the acquired should not be ignored, such as nutrition, exercise, sleep, etc. is also very important, in addition to a reasonable diet, adequate sleep time, appropriate sports programs, all contribute to the development of height.