In 490 BC, a young Greek warrior died suddenly after running to Athens to deliver the news of victory over the Persian army, which is the earliest documented case of sports risk. In modern sports, we have seen the unfortunate injuries of Mulan, Yao Ming, Lin Shuhao, Zhao Hongbo and Liu Xiang. Although sports are inevitably accompanied by the risk of injury, sports without risk are not called sports, but when sports risk occurs, it will bring greater harm to physical health, and in serious cases, even loss of athletic ability, affecting daily life. Sports risks include two categories of competitive sports risks and fitness sports risks Competitive sports risks mainly refer to the risks faced by athletes in competitive sports and training, which can include sports-related diseases, sports injuries (such as back injuries, fractures, joint sprains, muscle strains, etc.). In high-intensity, high-level and high-confrontation competitive sports, the existence of injury risk is very common and has a very important impact on athletes’ health, sports performance, sports life, and in serious cases can also cause disability, death, bringing serious physiological and psychological impact on people, preventing the normal development of sports. The flyer Liu Xiang has caused Achilles tendon disease because of sports and eventually caused a rupture of the Achilles tendon. Fitness risks are closely related to our fitness enthusiasts, which mainly refers to the various types of sports risks that occur in the process of public fitness, including not only the risk of sports injuries, but also the health risks of the body itself, such as cardiovascular events, stroke, hypoglycemia and so on. As these exercise risks are closely related to the normal physiological activities of the exerciser, if the intensity or manner of exercise is not appropriate, it can bring serious health hazards and even lead to sudden death and other serious consequences. If prolonged, intense exercise will make a person’s pain sensitivity during exercise is reduced, it is difficult to perceive the severe pain in the chest caused by a heart attack. Researchers in the United States and Germany have found that the risk of heart attack increases by 6 to 100 times when people who are normally inactive are suddenly exposed to intense exercise stress, and the chance of muscle strain also increases greatly, and the greater the amount of exercise, the higher the chance of risk. The risk of —- sudden death caused by the sudden death of sports has cast a thick shadow over the public fitness movement. According to the survey, the high incidence of sudden death is between 9:00 a.m. and 11:00 a.m. or within 3 hours after waking up; in a week, more sudden deaths occur on Mondays; in addition, the high incidence of sudden sports death is in winter. The main causes of sudden death from exercise are congenital heart malformations and hypertrophic cardiomyopathy in people under 35 years of age, and coronary artery atherosclerosis in people over 35 years of age, mostly during or immediately after sports such as competitive running, recreational jogging, and golf. What can we do to prevent the risk of sudden death in the face of sports at any time? First, in the face of sudden death risk, both competitive sports and mass fitness sports should be strictly screened and evaluated for effective risk prevention. Professional athletes usually go through a comprehensive and rigorous selection, physical fitness and physiological functions are at a high level, so only some key or easy to ignore indicators need to be screened. For the general public fitness, their physical quality varies, there are a variety of different risk factors, so it is necessary to regular health checks, sports risk assessment, to make the appropriate precautions. For example, people with heart disease should avoid strenuous sports; people in poor health, in a period of illness such as a cold and fever should also avoid sports; special weather conditions, hot weather, high winds, rain should also avoid sports. Secondly, in the face of accidental injuries in the process of sports activities, sportsmen should understand and master the knowledge of sports activities risks, especially the knowledge of sports activities safety prevention, the preparation work before sports include appropriate sports equipment, adequate preparation activities, identification of physical condition, identification of injuries during sports, identification of sudden death in sports activities, etc., enhance the awareness of sports activities safety, improve the risk of sports activities Self-preparedness and the ability to save themselves in dangerous situations, the conditions can purchase accident insurance or professional medical staff. With age, the selection rate of hypertension, hyperlipidemia, hyperglycemia, diabetes and other diseases is on the rise, moderate fitness exercise for many chronic diseases have a health care role, but the decline in health status and poor exercise habits will lead to increased risk of exercise. Nevertheless, sports risks are not unavoidable, so there is no need to talk about the tiger, as long as the correct understanding, active prevention, sports risks can be reduced to a minimum, so that more sports lovers enjoy the joy and passion brought by sports.