Objective: According to the secular change s of growth,the improved status of nu trition, and the existing problems of Chinese adolescents for the last 20 years , several strategies and measures are suggested in order to improve the health l evels of Chinese adolescents. Methods: The data of Chinese Nat ional Surveillance on Student's Health and Physical Fitness were analyzed, comb ined with cooper ative field survey and laboratory study. A series of norms and standards was set up in order to appraise ado...