Children shorter than their peers and lack of nutrition, genetic factors, but can not rule out the possibility of dwarfism. 1. Lack of nutrition: If children usually have picky eating, partiality and other bad eating habits, it will lead to the lack of a variety of nutrients in the body, thus appearing height growth is slow, shorter than the same age. 2. Heredity: If a child’s parents are short in height, the height of the next generation will not be very high under the influence of genetic factors. 3. Dwarfism: Dwarfism is a group of genetic or disease-induced growth and development disorders with complex etiology, with growth hormone deficiency dwarfism being the most common. The typical symptom of patients is short stature, lower than the average height of normal peers. Children shorter than their peers, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.