儿童的生长发育水平不仅是反映儿童营养和健康状况的主要指标,也是反映一个国家、一个地区、一个民族的生活水平和社会经济、文化科学发展水平的重要依据。儿童少年的生长发育及营养状况直接关系到国家未来的人口素质,同时儿童少年生长发育也是反映个体和群体健康状况的重要内容。只有在认识儿童生长发育的一般规律,掌握有关形态、功能、心理发 The level of children’s growth and development is not only the main indicator of children’s nutrition and health status, but also an important basis for reflecting the living standard of a country, a region and a nation and the level of social, economic and cultural science. The growth and nutritional status of children and adolescents is directly related to the quality of the country’s population in the future. At the same time, the growth and development of children and adolescents is also an important part of reflecting the health status of individuals and groups. Only in understanding the general laws of children’s growth and development, to master the form, function, psychological hair