Abstract: Objective To explore the physical fitness level among Chinese Han students aged 13-18 years in 2014 and physical fitness trend from 2010 to 2014,and to provide scientific reference for making intervention measures to improve students condition of physical fitness.Methods Students aged 13-18 were recruited from database of Chinese National Survey on Students Constitution and Health from 2010 to 2014.The collected data were tested to calculate combined scores and qualified rates based on the National Student Physical Health Standard modified in 2014.And t test and Chi-square test were used in the statistical analysis.Results The qualified rate of Chinese Han students aged 13-18 in 2014 was 83.9%.With the age increasing,the rate showed a downward tendency.The qualified rate of junior school students(86.5%) was higher than that of senior school students(81.3%) (x2=531.03,P<0.05).Boys were revealed with a lower qualified rate(83.5%) than girls (84.3%)(x2=12.86,P<0.05).The qualified rate of boys' health reduced from 85.8% in 2010 to 83.5% in 2014(x2 =110.25,P<0.05).The qualified rate of girls increased from 83.4% in 2014 to 84.3% in 2014(x2 =15.86,P<0.05).The changing trend of urban boys(-3.0%) and girls(1.0%) was higher than that of rural boys(-1.6%) and girls(0.8%) respectively.Conclusion Physical fitness of Chinese Han students aged 13-18 in 2014 is not optimistic,and there is a decline in students condition of physical fitness from 2010 to 2014.We should take targeted intervention measures to improve the physical fitness of students.