The increasingly cold weather is another test for patients with cardiovascular disease, and accidents can easily occur if they are not careful. Winter is the “high incidence” of acute heart attacks. For every 10°C drop in atmospheric temperature, coronary events and mortality increase by 11%. Among the causes of cardiovascular disease, atherosclerosis is the main cause, which is the basis for the development of hypertension, coronary heart disease, acute myocardial infarction, stroke and other ischemic cerebrovascular diseases. Atherosclerosis, as the name implies, is a hard mass that looks like thick porridge gathered in the endothelial cells of arteries, which is medically called “plaque”. These plaques can block blood vessels and cause poor blood flow. These plaques are caused by elevated blood lipids, which cause a large number of lipids to collect in the endothelium of blood vessels, narrowing the lumen and thickening the walls, and eventually forming atherosclerotic plaques. Even if patients with cardiovascular disease regularly take antihypertensive drugs, the elevated or fluctuating blood pressure caused by cold weather can cause the instability of atherosclerotic plaques, which can easily form blood clots and block the vascular “traffic”. Cold stimulation, smoking, intake of high-fat diet, etc. can increase the risk of atherosclerosis, but also increase the incidence of coronary heart disease myocardial infarction. The cold season is approaching, in addition to taking medication in accordance with the doctor’s instructions, we must do a good job of controlling blood pressure, blood sugar and other risk factors, in addition to the following aspects: 1, keep warm to prevent embolism. In winter, when it is cold, blood vessels, especially coronary arteries, are prone to contraction and spasm, resulting in insufficient blood supply, and may lead to embolism, so pay close attention to keeping warm. 2, patients should not be morning exercise. Because of sleep, the human body’s nervous system is in a state of inhibition, lack of vitality, morning when the sudden substantial exercise, neuroexcitability suddenly increased, very easy to induce cardiovascular disease, winter should pay attention to this issue. 3, tonic to moderate. Our folk have the habit of winter tonic, winter people exercise is less, coupled with a large number of hot food and tonic wine, it is easy to cause an increase in blood lipids, inducing cardiovascular disease, so winter tonic must be carried out according to the individual’s physique. 4.Mind balance. Emotional excitement is a cardio-vascular disease taboo, coronary heart disease, hyperlipidemia patients in particular should be relaxed, do not let the emotional ups and downs too much. 5, appropriate exercise. Cardiovascular patients are not unable to exercise, but to exercise appropriately. Reduced exercise can also cause slow blood flow and elevated blood lipids. To reasonably arrange the exercise time and control the amount of exercise. In winter, we should wait for the sun to rise after the temperature is not too low to exercise, at this time, the temperature rises, can avoid the sudden cold stimulation of the body and the onset.