1, genetic: genetic factors have a certain influence on the growth and development of children. For example, the parents’ height, skin color, hair quantity and form have a certain degree of influence on their children. 2, mental factors: experts believe that children who do not receive affection, because the body secretes less growth hormone, so their average height may be lower than children of the same age. 3, nutrition: nutrition is vital to growth and development. Infancy and early childhood need a reasonable diet structure, otherwise it will not only affect the normal development, but also affect the future intelligence. 4, sleep: after children fall asleep, the anterior lobe of the pituitary gland can secrete a growth hormone. If there is not enough sleep, the growth hormone may be blocked and mental dwarfism will be formed. 5. Exercise: Physical exercise using natural conditions has a great effect on enhancing children’s physical fitness, improving development and reducing morbidity. Sunlight, air and water can promote metabolism, digestion, absorption and blood circulation, which is beneficial to growth and development. 6, disease: long-term digestive disorders, recurrent respiratory infections, endocrine system diseases and brain underdevelopment, etc., have a direct impact on pediatric growth and development. 7, environment and climate: anthropological studies have proved that autumn grows heavier and spring grows taller. From a regional point of view, tropical development is earlier and cold zone growth is rapid. In addition, a reasonable living system, fresh air, no noise and pollution-free environment, are conducive to the physical and mental development of children.