Primary bronchial dilatation is divided into primary bronchial dilatation and secondary bronchial dilatation. Primary bronchial dilatation is most often seen in young children suffering from whooping cough, measles, pneumonia, asthma, etc., who develop imaging changes in adulthood, with marked bronchial dilatation with cystic and columnar changes in both lungs, long-term cough, yellow sputum, and even blood in the sputum. Bronchiectasis of the lungs, if secondary, is often seen in bronchial asthma, chronic obstructive pulmonary disease, old tuberculosis, pulmonary fibrosis, and pulmonary abscess, which can easily lead to residual bronchiectasis lesions in the lungs after healing, with complications of recurrent cough, yellow sputum, and even blood in the sputum. Generally, bronchiectasis requires high-resolution CT of the chest for further clarification, and sputum culture examination can understand the specific bacterial infection, so that antibiotics can be effectively given to control the infection as early as possible to avoid inducing hemoptysis and even respiratory distress. If bronchiectasis is accompanied by hemoptysis, it is easy to cause clot asphyxiation and affect life, so active resuscitation treatment is needed, and bronchial artery embolization can also be given to stop hemoptysis as soon as possible to save life.