In the age of informatization and automation, people's lifestyles have undergone tremendous changes. Many bad living habits have led to huge health risks. Words such as sub‐health and karoshi are common in modern cities. Therefore, it is difficult for people to change their living and working conditions and environment at the same time. Beginning to seek a healthy way, sports are widely used by the masses due to its variety and good fitness and body effects. However, whether in professional physical exercise institutions, spontaneous physical activity groups of street people, or even school physical education activities, there is no lack of physical fitness. The occurrence of individual injuries is contrary to the purpose of people's fitness exercise. Therefore, this article analyzes and discusses the dialectical relationship between sports and health, in order to provide reference for people to reasonably carry out sports and fitness.