Chronic bronchitis is an inflammatory disease in which the patient coughs and coughs for more than three months per year for two consecutive years after excluding other diseases that cause cough and sputum. Recurrent and gradually worsening cough is the prominent symptom of this disease. The cough is violent in the early morning after waking up and is not obvious during the day, and in severe cases the patient has a day and night cough that cannot be controlled. There is sputum that is not easily coughed up, and the sputum is white, sticky and foamy. Patients with combined respiratory tract infections may experience wheezing and shortness of breath, and are prone to recurrent infections due to seasonal temperatures. In the early stage, there are no specific signs and symptoms, and dry rales can be heard on lung auscultation. Treatment can be symptomatic with rehydration, antipyretic, cough suppressant, expectorant and wheezing drugs to reduce symptoms. Cold can easily cause the recurrence of this disease, so we should pay attention to the prevention and treatment of cold, and we can take herbal medicine to prevent influenza in general. In daily life patients must quit smoking, avoid contact with irritating gases, oil fumes also try not to contact; keep indoor air circulation, maintain humidity, environmental hygiene; enhance physical fitness, gradually, gradually increase the amount of activity; prevent cold and keep warm, avoid colds, flu high period do not go to crowded places; diet do not eat spicy and stimulating food, also do not eat cold food, all can stimulate the respiratory tract to trigger chronic Bronchitis. Once the corresponding symptoms appear, it is important to treat them as soon as possible to avoid delaying the disease.