Symptoms of coughing may occur after quitting smoking, usually for a short period of time. Coughing after quitting smoking may be due to the formation of mental dependence on nicotine, nicotine and other harmful substances in cigarettes, and when quitting there will be some discomfort, such as coughing, irritability, dizziness, headache, insomnia and anxiety. It may also be because after quitting smoking, the mucous membrane of the trachea is not stimulated by the harmful substances of cigarettes leading to increased sensitivity of the trachea, resulting in an irritating cough. After quitting smoking, you should live a regular life, you can exercise properly to maintain your health, and you should pay attention to avoiding stimulating beverages, and try not to eat sweets, desserts and fried foods. Can eat more fresh vegetables and fruits rich in vitamin C. Appearance of severe cough should be timely consultation and treatment to exclude the cause of disease.