Bronchitis is an inflammatory manifestation of the airways caused by pathogens and chemical irritants that irritate the airways, airway mucosa, and surrounding tissues. Tobacco contains harmful chemicals such as nicotine, and smoking is harmful to normal people. If the bronchitis is acute, smoking may aggravate the symptoms of coughing, coughing and shortness of breath, especially for chronic bronchitis, smoking is the main cause of its onset, and once diagnosed, chronic bronchitis is incurable and can only be treated to relieve the symptoms of the disease. This can reduce the onset of the disease and also reduce the occurrence of other diseases caused by smoking.