Usually, 12-year-old children’s epiphyses have not yet closed, and they generally have the potential to grow taller. In addition to genetic factors, children can grow taller through physical exercise, dietary adjustments, adequate sleep and other methods. 1. physical exercise: parents can let 12-year-old children more outdoor sports, such as jumping rope, running, basketball and other sports, not only can improve physical fitness, but also can stimulate the body’s secretion of growth hormone, which promotes the growth of height. 2. Adjust the diet: many children’s height problems are due to picky eaters caused by malnutrition, so parents should urge their children to eat meat, eggs, milk and other high-quality proteins every day, as well as supplementing the growth of a variety of nutrients needed to achieve balanced nutrition, in order to achieve the normal growth of height. 3. Adequate sleep: adolescents sleep at night is the peak period of growth hormone secretion, so every day the child should ensure that 8 to 9 hours of sleep, and it is best to go to sleep before 10 o’clock. If you find that your 12-year-old child is obviously lagging behind his or her peers, it is recommended that he or she consult a doctor in a timely manner, under the guidance of the doctor, improve the relevant examinations, clarify the cause of the disease and take appropriate measures to deal with it.