Smoking is a serious social problem. It is estimated that by 2030, smoking will kill 10 million people worldwide each year. At least 43 of the 3,500 chemicals contained in tobacco are carcinogens. The nicotine (nicotine) in tobacco reaches the brain 6 seconds after it enters the bloodstream and affects the sympathetic nerves, causing a rapid heartbeat, increased blood pressure, and blockage of the superficial blood vessels in the skin. Tar——carcinogens released during combustion, as well as carbon monoxide, hydrogen cyanide, methanol, arsenic, butane, naphthalene, DDT, and irritant smoke, are all substances inhaled when smoking. Smoking can directly cause damage to the respiratory system, leading to lung cancer, chronic obstructive pulmonary disease and other diseases; can make the cardiovascular system insufficient blood supply, prompting atherosclerosis, resulting in coronary heart disease, peripheral vascular disease and other occurrences; can also cause oral and laryngeal diseases, gastrointestinal diseases, bladder lesions, affecting fetal growth and development; passive smoking will also cause toxic effects on the surrounding health. According to the ancestral medicine, addiction to smoking spicy products can burn the lung gold, refining liquid for phlegm, and over time will consume qi and yin, resulting in phlegm and internal stagnation, resulting in a variety of related diseases. Various epidemiological surveys show that there is a “dose——response”relationship between the amount of smoking and lung cancer mortality, the more cigarettes smoked daily, the longer the time, the higher the risk of death from lung cancer. The earlier the age of smoking starts, the higher the risk of lung cancer. Smoking is the most important causative factor in chronic obstructive pulmonary disease (COPD). Although the patient’s own factors also play an important role in the development of COPD, smoking can make the bronchial epithelial cilia shorter and irregular, and cilia movement is impaired; it can weaken the phagocytosis and sterilization of alveolar phagocytes and reduce local resistance; it can cause tracheospasm and increase airway resistance, all of which are pathological processes in the formation of COPD. Smoking is also a worsening factor of bronchial asthma (the mechanism is not clear). In addition, idiopathic interstitial pneumonia (pulmonary fibrosis) is more frequent in male smokers, and almost all combined lung cancers are in smokers. The majority of tobacco-related deaths are respiratory diseases and neoplasms. Mortality from these diseases is positively correlated with the amount of cigarettes smoked per day and the duration of smoking. According to estimates, the number of deaths attributed to tobacco in China in 1990 was 600,000 (500,000 for men and 100,000 for women, 300,000 for those aged 35-69 years and 300,000 for those aged 70 years and older). Of these deaths, 300,000 were due to respiratory diseases, 200,000 to tumors, and 100,000 to vascular diseases. In China’s current tobacco-induced deaths, chronic lung disease accounts for 45%, lung cancer accounts for 15%, esophageal cancer, stomach cancer, liver cancer, stroke, ischemic heart disease and tuberculosis account for 5% to 8% each. The term “smoking causes a disease” means that the probability of premature death increases due to smoking. Many smokers do not have lung cancer (therefore, smoking is not a sufficient cause of lung cancer “ rdquo;), some non-smokers have lung cancer (therefore, smoking is not a necessary cause of lung cancer “ rdquo;), but many smokers who have lung cancer would not have lung cancer if they did not smoke (therefore, smoking is an important cause of lung cancer). Of course, not smoking does not prevent death (because eventually everyone will die), but smoking causes early death, and those who die from smoking between the ages of 35 and 69 lose about 20 to 25 years of life. Currently, 2/3 of men smoke before age 25, few quit, and about half of those who continue to smoke will die prematurely in middle and old age. If current smoking patterns continue, 100 million of the 300 million Chinese men now aged 0-29 will eventually die prematurely from smoking.