Tuberculosis belongs to the national statutory category B infectious disease, which can be clinically unexpressed, but more often manifests as cough, coughing, hot flashes, night sweats, even blood in the sputum, prolonged low-grade fever, and progressive body wasting. Imaging can suggest signs of lung infection, mostly in the form of foci of infection appearing in the apical and posterior segments of the lung, and if polymorphic changes, proliferation, exudation, nodules, calcification, pleural thickening, etc., are more suggestive of possible tuberculosis infection. In contrast, bronchitis is a common infectious disease of the lower respiratory tract, which can also manifest clinically as cough and sputum, rarely with blood in the sputum and fever. In bronchiectasis infection, chest imaging can suggest increased and thickened texture in both lungs, rarely accompanied by patchy shadow and not accompanied by polymorphic changes. Therefore, there are obvious differences between bronchitis and tuberculosis in terms of clinical symptoms and imaging. The treatment course of tuberculosis is more than six months, while bronchitis can be cured in about a week.