Cigarette smoking causes a strong cough, which can be caused by smoke irritation of the respiratory mucosa, or laryngitis, bronchitis and other diseases, it is recommended to quit smoking, and go to the hospital for examination. Tobacco burning smoke contains nicotine, nicotine, carbon monoxide and other irritating ingredients, when smoking, it will stimulate the mucous membrane of the respiratory tract, causing reactive respiratory smooth muscle spasm, resulting in severe cough. At the same time, long-term smoking may lead to laryngitis, bronchitis, chronic obstructive pulmonary disease and other diseases, which can be accompanied by coughing up phlegm and other manifestations while coughing violently. In addition, smoking may also lead to lung cancer, which may be manifested as irritating dry cough, coughing up sputum and blood or hemoptysis, chest pain, emaciation and so on. It is recommended to go to the hospital in time after the above symptoms appear, so as to avoid delaying the condition; smoking is harmful to health, it is recommended to quit smoking immediately.