Cigarette smoking affects cardiopulmonary function. Tobacco contains many harmful substances, including nicotine, tar, carbon monoxide and other toxic substances, which can directly affect the cardiovascular and respiratory systems, leading to cardiopulmonary diseases, cardiopulmonary insufficiency, etc. The specific cardiovascular and pulmonary damages are as follows. The specific damages to cardiovascular and lungs are as follows: 1. Effects on cardiovascular system: (1) nicotine in tobacco can make the brain excited, highly addictive, but also can trigger vasoconstriction, heartbeat accelerated, so that blood pressure rises, so that the endothelium is damaged, aggravate atherosclerosis, cause coronary artery spasm, induce angina pectoris and myocardial infarction, resulting in impaired cardiac function. (2) Carbon monoxide in tobacco mainly affects the oxygen-carrying capacity of the human body, which also affects the endothelium of blood vessels, and in the long run, cardiovascular and cerebral vascular diseases are likely to occur. 2. The effect of smoking on lung function: the tar component in tobacco is the main cause of lung and throat cancer, but also aggravates the symptoms of asthma and other lung diseases. Long-term heavy smoking can cause chronic bronchitis, tuberculosis, chronic obstructive pulmonary disease, pulmonary heart disease and cardiac insufficiency.