A sports power should meet the requirements of a sports power, and the people of the whole country should be strong. To meet this requirement, the whole people must take part in physical exercise, strengthen their physique and improve the physical quality of the whole nation. Therefore, there is a great correlation between a strong sports country and national fitness. At present, most people in China are not counted as sports population. National fitness is to increase the sports population. The so-called sports population means participating in moderate-intensity sports activities at least three times a week, each lasting at least 30 minutes. This is the situation of the sports population. According to this standard, there are still many people in China who do not meet the standard of sports population. Therefore, we should emphasize national fitness and develop our country into a sports power. The so-called sports power can not only improve the comprehensive national strength of China, but also improve the health level of the whole people. The so-called "life lies in exercise", exercise can improve people's physical health (cardiopulmonary function, immunity), improve the physical quality of the whole people, and improve mental health (exercise can alleviate people's anxiety caused by stress). Therefore, there is a strong correlation between national fitness and sports power.