Infections of bronchiectasis are mainly common in inflammation of the lungs caused by Mycobacterium tuberculosis, Mycobacterium pertussis and adenoviruses. In addition, Aspergillus and Mycoplasma can also cause chronic necrotizing bronchopneumonia secondary to bronchiectasis, which is a chronic inflammatory reaction in the airways, resulting in chronic suppurative inflammation and varying degrees of fibrosis in the bronchi and surrounding lung tissue. This state can lead to the destruction of the muscular elastic tissue of the bronchial walls and the formation of fibrotic changes, in which the bronchi are deformed, which leads to the emergence of a pathological state of persistent dilatation. The patient develops a chronic cough with a large amount of purulent sputum, repeated hemoptysis.