There are many reasons that affect a child’s height, parents should prescribe the right medicine, do not blindly use medicine. Here are seven factors that affect a child’s height: 1. 75% of a child’s height depends on genetic factors. Research has proven that 75% of the final height of the human body depends on genetic factors. In other words, in general, the parents are high, the children are also high; parents are short, the children are also short. 2, nutrition is the material basis of the child’s height development. Children in growth and development period, must constantly take in a variety of nutrients from outside as the material basis for growth and development. Nutrient deficiency or excess (such as excess protein intake) and other unreasonable diet will not only affect the development, but also lead to malnutrition and various nutritional deficiencies. Long-term malnutrition affects the maturity of the bones and their length, so that the bones do not reach their proper length when they heal and form a short physique. 3, physical exercise is the most powerful factor to promote physical development and enhance physical fitness. According to the survey, a year of physical exercise can make the height of boys 1-2 cm longer than their peers who do not exercise, and girls 2-3 cm longer. Elementary school students who exercise regularly are about 5 cm taller than those who do not exercise. Physical exercise can not only comprehensively promote the body’s metabolism, enhance the development of the respiratory system and cardiovascular function, but also under reasonable nutrition can promote the development of physical fitness, especially the development of bones and muscles. 4, deep sleep state, the most growth hormone secretion. Biologists studying the secretion pattern of endocrine glands found that for children and teenagers, sleeping well grows taller. The growth of height depends on the continuous growth of epiphysis, which in turn is controlled by endocrine glands. 5, height and sexual maturity early and late also have a relationship. The age of maturity will affect the rapid growth of height. Generally, the rapid growth phenomenon occurs earlier, it will reach the termination point sooner; later, it will also reach its end point later. When the sexually precocious teenage girls no longer grow taller, the sexually late teenage girls are still growing taller. 6, psychological, emotional, spiritual, etc. also affect height. Studies have found that children who have been severely traumatized mentally have delayed or even stagnated growth. This is because bad emotions can affect the function of the brain and endocrine system, the lighter affects physical development, the heavier leads to a variety of diseases. 7, good habits are also an important factor in growing taller. Reasonable arrangement of regular and rhythmic habits can ensure that children have enough outdoor activities and appropriate study time, regular meals and adequate sleep can promote their growth and development.