With the waves of cold air, the winter cold has begun to attack the city, threatening our health. The blood vessels, which are obviously affected by the temperature, will contract in the cold at this time, so a series of chain reactions occur in our body, and various diseases will follow. Thermal expansion and contraction is a basic property of most substances, in fact, blood vessels also have this property. In winter, as the temperature drops, the blood vessels will also contract. Blood vessels are elastic and healthy people can withstand this physiological contraction, but for those who have problems with their blood vessels, the contraction leads to increased blood pressure and narrowing of blood vessels, which can be fatal. Prevention of cerebral infarction – early prevention and treatment of carotid plaque With the popularization of screening technology, more and more middle-aged and elderly people are told that there is plaque in carotid artery and carotid artery stenosis, and many patients are worried about it. Carotid plaque is a product of Donai atherosclerosis and is a common cause of carotid artery stenosis. The blood supplying the brain comes from the carotid artery, and the root of the disease in many stroke patients is carotid stenosis. Carotid plaque should be detected and prevented in time, change lifestyle, develop healthy eating habits, improve the condition with the help of medication if necessary, and reduce the risk of cardiovascular disease. Lower extremity vein embolism vascular stent has immediate effect on venous blockage and arterial blockage, the same as venous stenosis and blockage, but the difference is that, like the blockage of the sewer pipe, venous stenosis and blockage, resulting in edema of the upstream tissues. Deep vein thrombosis of lower limbs is a kind of venous obstruction, and its main manifestation is swelling of lower limbs, if left untreated, it will leave sequelae, and in serious cases, it can lead to itchy skin, black color, ulcerated calves, and become the “old rotten feet” that cause headaches to doctors and sufferings to patients. So, how is the formation of venous thrombosis? Venous thrombosis is a disease in which acute non-suppurative inflammation occurs in the veins under the condition of sluggish venous blood flow, blood hypercoagulation and intimal damage, and secondary thrombosis. Sedentary is the most common trigger of venous thrombosis, postpartum, postoperative, trauma, infection, tumor, bed rest, exertion, vascular disease, heart disease, cold, etc. may become the cause or trigger of venous thrombosis, and it often occurs due to the joint action of multiple factors. Atherosclerosis usually causes two kinds of morphological changes, one is the hardening of the arterial wall, plaque formation, lumen narrowing and even occlusion; the other is the destruction of the inner wall of the arterial vessels and the hardening and stiffening of the lumen, and the dilatation occurs under the continuous impact of high pressure arterial blood flow. The other change is the destruction of the inner wall of the arterial vessel and the stiffening of the lumen. Aneurysms have become a common condition and can occur in the carotid, subclavian, axillary, brachial, radial, iliac, femoral and N arteries. Aneurysms are known as “time bombs” in the medical field, and if left untreated, they may suddenly rupture and cause arterial bleeding, which can be life-threatening in serious cases, and the mortality rate of ruptured aneurysms in large arteries is even higher. Therefore, once an aneurysm is found, it should not be left to chance, and active treatment measures should be taken scientifically and with the knowledge of a specialist. At present, surgical treatment is still the only and preferred effective treatment to cure aneurysms. The main task of the vascular system is to transport nutrients such as fat, protein, sugar and oxygen to the tissues and organs of the body. When there is an excess of certain nutrients, they will accumulate in the blood vessels, which will lead to atherosclerosis and the formation of arterial plaques if they occur in the arteries and venous thrombosis if they occur in the meridians. Therefore, vascular disease is also a type of lifestyle disease, and diet, exercise, life style, etc. are closely related. Prevention of vascular disease, we must start from changing the bad lifestyle. To do a reasonable work and rest, combined with work and rest; diet science, balanced nutrition; appropriate exercise, persistent; peace of mind, emotional optimism. Among them, the harmful effects of smoking on blood vessels has reached a consensus in the medical community, but there are still some people who do not have sufficient knowledge and attention to this, not only damage their own health, but also threaten the health of others, the need to sound the alarm to such people. And often exposed to “second-hand smoke”, “third-hand smoke” of the population, but also to strengthen self-protection. The winter climate is cold, cold air frequently attack, blood vessels often suffer from cold stimulation, sudden contraction, resulting in a high incidence of various vascular disease. Therefore, this period should strengthen the prevention and vigilance to take care of our vascular health.