Children who are thin and do not grow meat may be related to genetic factors, but also may be caused by malnutrition, nutrient deficiencies and other factors. 1. Genetic factors, if someone in the family body is thin, may also lead to the offspring of this situation, there is a certain genetic predisposition, as long as the child’s health. 2. Malnutrition, if the child is usually partial to picky eating, malnutrition, may lead to the child thin not long meat. 3. Nutritional element deficiency, some of the children thin not long meat may also be related to the lack of nutrients in the body, such as lack of zinc, calcium deficiency may affect the growth and development of children, this symptom. There may also be other reasons for children’s thinness and lack of meat, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.