Bronchiectasis combined with lung infection may be caused by respiratory tract infection, bronchial obstruction, etc. It can be treated by general treatment, drug treatment and surgery. 1. Respiratory tract infection: patients with bronchiectasis combined with lung infection should improve the pathogenic culture and drug sensitivity, and use amoxicillin, levofloxacin, voriconazole and other drugs according to the characteristics of the pathogen for anti-infection treatment. In addition, oral expectorant drugs such as Ambroxol dispersible tablets, or nebulized inhalation such as acetylcysteine, etc., as well as physical expectoration, bronchoscopy suction and other methods to help remove airway secretions. 2. Bronchial obstruction: Bronchodilatation combined with lung infection may also be caused by bronchial obstruction resulting in increased secretions and poor drainage. The cause of obstruction may be foreign body, sputum plug, infection, tumor, etc., then the patient needs to follow the doctor’s advice according to the cause of the bronchoscopy to remove the object, sputum plug, surgical resection of diseased tissue, bronchial balloon dilatation, bronchial stent and other ways of treatment. It is recommended to consult a doctor in time and follow the doctor’s instructions to standardize the treatment.