摘要人体体成分可简单分为脂肪组织和非脂肪组织，体成分各组分的含量和组成受年龄、性别、生长发育、膳食营养、身体活动、疾病状况等多因素共同影响，可被用来反映人体的营养和健康状况。儿童青少年的体成分随生长发育变化呈现更加明显的特征。科学评价我国儿童青少年群体的体成分特征、个体体成分在同类人群中所处的水平及相对位置，对反映其营养状况、预防与控制超重肥胖、评估长期健康风险等具有重要意义。生物电阻抗法测量体成分具有安全无创、操作简便、结果稳定可靠的优势，尤其适用于儿童青少年体成分测定。

abstractsHuman body composition can be divided into adipose tissue and non-adipose tissue. The content and composition ratio of body composition, which are influenced by multiple factors, such as age, gender, growth and development, dietary nutrition, physical activity and disease, can be used to reflect the nutritional and health status of human body. The body composition of children and adolescents shows more obvious characteristics of changing with their growth and development. Scientific evaluation of the body composition characteristics of children and adolescents, and the level and relative position of individual body composition in the whole population in China is of great significance for the understanding of one's nutritional status, prevention and control of overweight and obesity, and evaluation of long-term health risks. Bioelectrical impedance method has many advantages in the measurement of body composition, such as safety, non-invasiveness, easy operation and stable and reliable results. Moreover, it is suitable for the measurement of body composition of children and adolescents.