For patients with cardiovascular disease, the arrival of summer is undoubtedly a good thing, because the rise in ambient temperature makes the prevention and treatment of cardiovascular disease significantly better than in the fall and winter, and there are relatively fewer patients who need to be hospitalized for exacerbations. However, for the above reasons, it is also easy for potential and existing cardiovascular patients to take the prevention and control of cardiovascular disease lightly, thus triggering the occurrence or worsening of cardiovascular disease. During the hot summer months, the number of heart attacks increases significantly, and not only the frail elderly are at risk, but many middle-aged people and even young people in their twenties and thirties may also develop such problems. Therefore, patients who are already suffering from cardiovascular diseases, as well as people with high-risk factors for cardiovascular diseases should pay attention to their physical condition, pay attention to and prevent the occurrence of sudden cardiac death, acute myocardial infarction, sudden cardiac death, heart failure and other emergencies, so as to spend the summer safely. Among the causes of cardiovascular diseases, atherosclerosis is the main cause, and it is the basis for the development of ischemic cardiovascular diseases such as hypertension, coronary heart disease, acute myocardial infarction and stroke. Atherosclerosis, as the name implies, is a hard mass with the appearance of thick porridge attached to the inner wall of arteries. These hard lumps can block blood vessels and lead to poor blood flow. Eventually, atherosclerotic plaques are formed. Because the damage to the body is insidious, gradual and systemic, with no obvious clinical symptoms, the disease is known as the “silent disease” or “silent killer”. According to statistics, most of the patients with sudden onset of the event have panic, chest discomfort or even chest pain, excessive fatigue or difficulty in breathing on the day of onset or several days before the onset. Therefore, as long as we pay attention to these early signs and symptoms, pay attention to regular physical examination, timely consultation and early treatment, we will avoid the occurrence of the event to the maximum extent and reduce the mortality rate of patients. After the emergence of hot weather in summer, some patients with cardiovascular disease, especially those who are relatively fat, are afraid of heat and prefer to blow air conditioning, which often triggers respiratory diseases due to the impact of the large contrast between indoor and outdoor temperatures, thus triggering the occurrence or aggravation of cardiovascular disease. Most of the patients hospitalized in cardiovascular medicine are induced or aggravated by respiratory infections. The main risk factors for cardiovascular events in summer include: heavy smoking, excessive alcohol consumption, overeating, sharp rise in blood pressure or forceful bowel movements, cardiomegaly, excessive obesity, especially abdominal obesity, excessive emotional stress, heavy physical activity, and severe sleep disturbances. How to effectively prevent the occurrence of cardiovascular disease events, need to do the following: 1, regular medical check-ups: whether heart patients or healthy people, should be regular medical check-ups, because acute myocardial infarction, sudden cardiac death, heart failure, etc., often find seemingly healthy people, especially middle-aged people with organic heart lesions, but the symptoms are not obvious. Into the summer more attention needs to be paid to medical examination, especially those who feel some discomfort. 2, quit smoking: the dangers of smoking are well known, the incidence of coronary heart disease in smokers is 3.6 times higher than in non-smokers, smoking and other risk factors such as: high blood pressure, high cholesterol have a synergistic effect, can make the risk of coronary heart disease multiplied. 3, balanced diet: summer should choose more high protein, easy to digest food such as fish, chicken, milk, soybeans, etc.. It is advisable to eat vegetable cooking oil such as: peanut oil, canola oil, corn oil, etc., eat more coarse grains rich in food fiber, vegetables, increase the intake of vitamins, eat more fresh fruits and vegetables, control sweets, low salt diet, less fried, fried, smoked, baked and pickled foods, meals should not be too full. Can eat less and more meals. 4, actively treat the original disease: such as hypertension, coronary heart disease, etc. Some hypertensive patients into the summer blood pressure will be lower than other seasons, some patients will stop their own medication, this practice is very dangerous, should be under the guidance of a doctor to adjust the antihypertensive drugs. 5, avoid excessive mental tension: mental tension can make the blood pressure rise, the heart burden increased. Excessive mental tension can also induce arrhythmias, emotional excitement can easily induce coronary heart disease and other physical and mental diseases, and can even cause myocardial infarction and other accidents in the elderly who already suffer from cardiovascular disease. So do a good job in the tension to relax emotions, self-adjustment. 6, life should be regular: regular life and living include: get up on time, regular meals, moderate exercise, sleep on time, proper rest, pay attention to the combination of work and rest, and maintain good hygiene habits. Studies have proved that people’s blood pressure drops only during sleep, and the circadian pattern of blood pressure should be maintained. When hypertensive patients’ sleep quality decreases at night in summer, they will experience an increase in blood pressure at night, which will aggravate the damage to the heart and brain vessels. Therefore, patients must do a good job to prevent the heat and ensure normal sleep. 7, moderate exercise: moderate physical exercise can improve cardiovascular function, so that the body’s blood circulation and microcirculation is improved. Walking is the simplest and safest exercise. Walking can make the heart contraction strengthen, heartbeat speed up, blood flow accelerates, the coronary artery blood flow increases, so that the body adapts to the needs of walking exercise, which is also a kind of exercise for the heart. Older people should avoid morning exercise, and try to choose evening time exercise in summer. 8.Beware of colds and keep your bowels open. 9, pay attention to the air conditioning temperature is not adjusted too low, in addition, do not stay in the air-conditioned room for too long, in and out of the temperature difference is particularly large in different environments prone to induce cardiovascular disease.