The typical manifestations of bronchiectasis are as follows: 1. fever, patients may show symptoms of systemic toxicity; 2. repeated hemoptysis, more than half of the patients will cough up different amounts of blood, which can range from blood in sputum to hemoptysis, such as hemoptysis caused by the rupture of bronchial arteries with high pressure, blood appears to spurt out sharply, the amount of bleeding can reach hundreds of milliliters in a short period of time, after bleeding, the vascular pressure decreases and contracts, part of the out can automatically 3. chronic cough and coughing up large amounts of purulent sputum, 50%-90% of patients have typical symptoms of cough and purulent sputum; 4. 1/3 of patients may have chest pain; 5. often accompanied by weakness, loss of appetite, wasting, anemia, and anxiety. There are no obvious signs in early lesions, and persistent wet rales can be heard at the lesion site when the lesion is obvious.