Chronic bronchitis can not be completely cured clinically at present, but through treatment, the condition of some patients can be controlled without affecting work and study. Chronic bronchitis, referred to as chronic bronchitis, is a chronic non-specific inflammation of the trachea, bronchial mucosa and its surrounding tissues. The main symptoms are coughing, coughing up sputum or accompanied by wheezing. The cause of the disease is not completely clear, and it is characterized by prolonged or recurrent episodes that make the disease progress, so it is more difficult to cure. The infection can be controlled and relieved by medication, such as levofloxacin and bromhexine. If the condition is not well controlled, it is easy to develop into chronic obstructive pulmonary disease (COPD) and pulmonary heart disease (PHD). Patients with chronic bronchitis should not only quit smoking, but also avoid passive smoking, moderate exercise, and prevent colds. When there is a change in the condition, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, clarify the cause with the help of the doctor, and carry out targeted treatment or therapy.