With the development of society, the accelerated pace of life, workload overload, the existence of underlying diseases, unhealthy diet, lack of exercise, irregular work and rest, mental stress and other problems among young people have increased the incidence of sudden death, especially sudden cardiac death. Before the occurrence of sudden death, the body will release certain signals, but they are easily ignored and eventually cause tragedy. Therefore, the signals sent by the body should be detected in time and scientific prevention should be carried out so as to reduce the risk of sudden death. First, the cause: 1, the presence of underlying diseases: cardiovascular disease is one of the important causes of sudden death, most of the young people who die suddenly have underlying diseases, such as coronary heart disease, congenital heart disease, cardiomyopathy (such as hypertrophic cardiomyopathy, dilated cardiomyopathy) and arrhythmia. If you do not pay attention to their own disease, not actively control and treatment, easy to appear brain hemorrhage, myocardial infarction and other problems, triggering sudden death; 2, unhealthy diet: young people because of work pressure, often do not have enough time to cook for themselves, but choose to eat take-out, eat fast food, and even some young people can not guarantee the regular three meals a day. In order to relieve pressure, some young people like to eat sweets, there are also smoking, drinking and other bad habits. In the long run, this will increase the body’s blood lipids, increasing the risk of blood vessel blockage, leading to increased vascular pressure, which can induce hyperlipidemia, hypertension and other diseases. If the above situation is not detected and corrected in time, it will increase the risk of sudden death; 3, lack of exercise: young people due to the pressure of work, life, often can not guarantee the amount of daily exercise, resulting in slowing down the body’s metabolism, fat can not be fully consumed, muscle can not be exercised, inducing obesity, but also further increase the vascular pressure, will also increase the risk of sudden death; 4, irregular work and rest: due to Staying up late, the body organs do not get sufficient rest, there will be fatigue, reduced attention, etc., in order to maintain normal physiological functions, will increase the secretion of adrenaline, heart contraction will be strengthened, blood flow rate increases, blood pressure rises, and in serious cases may cause the rupture of the blood vessel wall, inducing cerebral hemorrhage, resulting in sudden death; 5, mental stress: young people will appear because of the stress of life and Stress and anxiety, emotional instability, etc., long-term in a high-pressure environment will appear endocrine disorders, increased blood pressure, vasoconstriction, rapid heartbeat, etc., and may cause angina, heart attack and other heart disease, and even sudden death. Second, the possible signals before the onset of sudden death: 1, early signals: if young people do not feel ill, feel healthy, but the presence of high body weight, high blood pressure, high blood pressure found during a physical examination, should be taken seriously at this time. Some young people can also appear inattentive, easily fatigued, mood easily irritable and other symptoms, also suggests the existence of physical abnormalities. It is recommended to correct as soon as possible, improve bad habits, exercise properly, maintain a healthy diet and rest; 2, late signals: before sudden death the body will often also send out some signals, which can last from a few minutes to a few hours, such as sweating, anxiety, chest pain, pain can spread to the back, upper abdomen and other parts of the body, there may also be nausea, vomiting, shortness of breath, cough, breathing difficulties, dizziness and weakness and other symptoms At this time, do not think that you are just overworked, this may be the last signal from the organism. Please seek medical attention in time to reduce the appearance of life-threatening situations. Third, treatment: when the symptoms appear, it should be taken seriously, it is recommended to rest immediately, avoid continuing to work or other activities, immediately seek medical attention or call the 120 emergency number. After arriving at the hospital, an electrocardiogram is usually required to clarify the cause and to receive timely thrombolytic or interventional treatment to avoid life-threatening situations. Besides, if people around you show dangerous symptoms such as fainting and loss of consciousness, it is recommended to perform cardiopulmonary resuscitation or use electric defibrillation equipment while calling 120 emergency number to correct the abnormal heart beat and reduce the possibility of death. 4. Prevention: 1. Active treatment of underlying diseases: If you have congenital heart disease, cardiomyopathy (such as hypertrophic cardiomyopathy, dilated cardiomyopathy) and arrhythmia, be sure to treat them as early as possible to avoid aggravation of the disease; 2. Healthy diet: ensure three regular meals, comprehensive nutritional intake, reduce the intake of high-fat and high-sugar diet, do not be partial or picky, drink more water, and eat more vegetables, fruits, cereals and other foods; 3. Reasonable rest: reduce sedentary and stay up late, every half hour of work can stand up and move, and to ensure 6-8 hours of sleep per day and better sleep quality; 4, reasonable exercise: appropriate exercise, can ensure about three times a week aerobic exercise, such as running, aerobics, etc., can help improve cardiorespiratory function; 5, maintain a good mood and mentality: usually pay attention to relieve stress, avoid depression The first thing you should do is to avoid depression, tension and anxiety. If there are related psychological problems, early consultation for psychological counseling or related medication; 6, regular medical checkups: it is recommended that a full body checkup be conducted once a year, and if necessary, increase the number of specialized medical checkups to detect problems early and correct them early.