Quitting smoking has a great effect on blood vessel recovery. Tobacco contains a large amount of nicotine, can cause the thyroid gland, adrenaline secretion increases, blood pressure increases, heartbeat accelerated, but also can destroy the inner lining of the blood vessels, promote the formation of blood clots. At the same time smoking can also lead to vascular spasm and contraction of vascular resistance increases, and even cause further increase in blood viscosity, accelerating atherosclerosis of the periphery of the body, smoking can also cause a more serious reaction, such as myocardial infarction, cardiac arrest, or even sudden death; can also cause cerebral vascular sclerosis, so that the human body memory loss, damage to brain cells. Therefore, smoking cessation is a prerequisite for the treatment of vascular disease, under the premise of smoking cessation, the use of a variety of vasodilating, lipid-lowering, antiplatelet drugs for the treatment of vascular disease, so patients with vascular disease try to quit smoking as early as possible.