Coronary heart disease is one of the most common and serious heart diseases. It is a disease caused by atherosclerosis of coronary arteries leading to narrowing or occlusion of blood vessels, resulting in inadequate blood supply to the myocardium and causing ischemia and hypoxia to the myocardium, thus causing structural and functional disorders of the heart, which is also called ischemic heart disease. The main manifestations are angina pectoris, myocardial infarction and sudden death. The incidence and risk of death of coronary heart disease increases gradually with age, and the elderly population is more susceptible to coronary heart disease, especially in the cold weather is the season of coronary heart disease, and the risk increases significantly. The main reason for the prevalence of coronary heart disease in early spring is due to the low temperature in winter and the large difference between indoor and outdoor temperatures, which can cause sympathetic excitation, spasm and contraction of small blood vessels on the body surface, accelerated heart rate, increased blood pressure, increased myocardial oxygen consumption, increased heart load, which can also induce coronary artery spasm causing angina attack, and in severe cases can lead to atherosclerotic plaque rupture inducing thrombosis, resulting in severe stenosis of blood vessels or Occlusion and lead to acute myocardial infarction or even sudden death. In addition, the cold climate causes changes in people’s lifestyle, such as increased diet, reduced activity and depressed mood, which slows down blood circulation and makes it easy to form blood clots, thus increasing the risk of myocardial infarction. In this season of daily life, should actively take some effective ways to prevent the onset of coronary heart disease: 1. A healthy lifestyle is the first line of defense to avoid cardiovascular morbidity. First do a good job of keeping warm, especially the face and extremities, in the cold wave and heavy snowy weather, should reduce the time to go out and work outdoors, and prevent colds, because infection or fever can increase the burden on the heart and induce the onset of angina, myocardial infarction or heart failure. Second, pay attention to a reasonable diet, should eat less and more meals, advocate a balanced diet, increase the intake of fruits and vegetables, reduce the consumption of animal oil, sugar, cream and high-fat food, to prevent the slow flow of blood and lead to thrombosis caused by blockage of the blood vessel cavity. Thirdly, try to avoid morning exercise, because early morning is often the peak of cardiac events, especially in cold weather, the early morning temperature is lower, and sympathetic nerve activity is higher, easy to lead to arrhythmia and sudden death, but also may cause coronary artery spasm leading to angina attack or induced myocardial infarction. Advocate the afternoon or evening to adhere to the physical exercise within reach such as outdoor walking, taijiquan and qigong and other aerobic exercise is better, do not carry out strenuous activities. Fourth, avoid overwork and emotional excitement, because excessive physical labor or emotional excitement may cause increased myocardial oxygen consumption, or myocardial ischemia caused by coronary artery spasm, triggering an angina attack. Fifth have a calm mind, ensure sufficient sleep, quit smoking and limit alcohol can also effectively reduce the attack of coronary heart disease. 2, adhere to the standardized use of drugs and regular review is the fundamental way to control the development of coronary heart disease. Atherosclerosis is a chronic and progressive process, so once diagnosed with coronary heart disease, in principle, you should take medication for life, especially in winter, so as to stop the progression of coronary heart disease. The main drugs for the treatment of coronary heart disease include vasodilators, anticoagulants, antiplatelet and lipid-regulating drugs, such as nitrates, aspirin, statins and other lipid-regulating drugs. It is also necessary to control other risk factors of cardiovascular disease, such as blood pressure, blood sugar, lipids, etc. to meet the standard. And regular visits to regular hospitals to receive guidance from doctors to adjust drugs, and timely detection and avoid adverse drug reactions. If you have chest pain and other uncomfortable symptoms should seek medical attention as soon as possible. 3, learn pre-hospital emergency is an important way to relieve angina attack and prevent sudden death. Angina is the main symptom of coronary heart disease, as a signal of myocardial ischemia. Typical angina is mainly manifested as paroxysmal chest tightness or crushing pain, and can be extended to the neck, jaw, arm, back and stomach, chest pain attacks can be accompanied by dizziness, shortness of breath, sweating, shivering, nausea and fainting, etc., generally lasting a few minutes. If the angina attack is frequent, or more intense than before and prolonged, if not treated in time, acute myocardial infarction may occur and endanger life, you should go to the hospital as soon as possible. If angina occurs outside the hospital, you should rest immediately and take one piece of nitroglycerin under the tongue (half a piece for the first time for elderly people over seventy years old), and after five minutes, if the chest pain is not significantly relieved, you can take one piece again, up to three times in a row. If the patient’s condition worsens, the chest pain is severe or does not ease, and there are symptoms such as difficulty in breathing, pallor and sweating, this may not be a general angina attack, but may be the aura of acute myocardial infarction or myocardial infarction has occurred, the patient must be bedridden, do not move at will, contact the emergency center as soon as possible, take the emergency vehicle equipped with medical personnel to go to the regular hospital at the first time to receive standardized The patient should contact the emergency center as soon as possible.