Finishing a cigarette has an effect on blood pressure. Smoking causes an increase in heart rate and a rise in blood pressure. Patients should remain calm, do not smoke, drink coffee, alcohol, or exercise strenuously 30 minutes before measuring blood pressure. Empty the bladder, sit still and rest 5-10 minutes before measurement. Nicotine in tobacco can constrict blood vessels, leading to a transient increase in blood pressure. Frequent smoking causes long-term constriction of blood vessels and long-term high blood pressure. In addition smoking will destroy the endothelium of blood vessels, affect lipid metabolism, once the endothelium of blood vessels is destroyed to expose collagen, platelets will gather here, lipids with blood flow through here will also be deposited, forming plaques, leading to atherosclerosis, is an important influence on cardiovascular and cerebrovascular diseases, it is recommended that the patient as soon as possible to quit smoking, strict smoking cessation, to reduce the occurrence of cardiovascular and cerebrovascular diseases.