Abstract: Chronic obstructive pulmonary disease(COPD), as a common and frequently occurring respiratory disease in clinical practice, is mainly classified into bronchitis and emphysema based on long-term clinical theory and practice. With the widespread application of high-resolution CT, CT scans of some patients with COPD show the presence of bronchiectasis. The repeated respiratory infections caused by bronchiectasis exacerbate the decline of lung function and the development of respiratory failure. Therefore, further research is needed on the special phenotype, pathogenic factors, pathogenesis, and clinical treatment of COPD combined with bronchiectasis. Through a comprehensive analysis of the pathogenesis and clinical treatment theories of chronic obstructive pulmonary disease with bronchiectasis in recent years, we can further understand this disease.

Key words: chronic obstructive pulmonary disease, bronchiectasis, complication, pathogenesis, treatment methods