The normal range of height for 12-year-old boys is between 144.7-159.3cm, with an average height of 151.9cm; in terms of weight, the normal range is between 34.68-52.12kg, with an average weight of 42.49kg. boys in this age group should pay more attention to the intake of high-quality protein in their diet, and can eat more milk, eggs, fish, beef, as well as leafy greens and fruits. Fruits, usually participate in more outdoor sports, more basketball, soccer, swimming, etc., are very good projects, can effectively promote the child’s healthy growth and development. But do not demand too much from your child’s height, because it has to do with the child’s genetic factors, living environment and many other factors. If your child is too short, you need to seek medical examination if necessary, and then use medication to treat it.