Smoking will certainly lead to a rapid heartbeat, because there is nicotine and tar in the cigarette, both of these substances will make the heart beat faster, smoking will not only make the heart beat faster, but also cause damage to the endothelial cells of blood vessels, which will directly damage the lungs, so long-term smokers are prone to coronary atherosclerotic heart disease and lung diseases, especially lung tumors. It is recommended that long-term smokers must quit smoking, including low-tar do not smoke, because after long-term smoking will lead to tumors, lung cancer, the occurrence of coronary atherosclerosis, so smoking is harmful, we must quit smoking.