Chronic bronchitis itself is not life-threatening, but if the patient has a long course of the disease and has been diagnosed with chronic bronchitis for many years, the disease can further evolve into chronic obstructive pulmonary disease and chronic pulmonary heart disease as the patient ages. These two diseases can eventually lead to chronic respiratory failure, pulmonary encephalopathy, and life-threatening systemic multi-organ failure. Once chronic bronchitis is diagnosed, it is important to actively intervene by adopting good lifestyle habits, quitting smoking, and avoiding inhalation of harmful gases and particles. Regular lung imaging as well as pulmonary function tests are done to enhance physical fitness and prevent the occurrence of respiratory infections such as colds. Pneumonia and flu vaccines can also be given in advance to reduce the occurrence of infections.