Smoking can cause an increase in blood pressure, is one of the risk factors for the occurrence of hypertension, long-term smoking hazards are as follows: 1, the adverse stimulating effect of nicotine in tobacco on the body can make the sympathetic nerves overexcited, promote nerve endings, release catecholamines and other substances, so that vasoconstriction. Clinical manifestations of high blood pressure, rapid heart rate, increased myocardial oxygen consumption, will increase the burden on the heart, causing myocardial ischemia, the adverse effects on the body. 2, abnormal lipid metabolism, promote cholesterol deposition in the intima, damage the vascular endothelium, reduce the elasticity of the vascular wall, as well as promote the occurrence and development of atherosclerosis, so that the incidence of hypertension increases. 3, increase the incidence of blood clots, leading to cardiovascular disease Increase. Smoking is harmful to health, and smoking cessation is actively promoted.