As the third major chronic airway disease in China, bronchiectasis has a wide range of patients. However, the involved sites, morphological features and airway obstruction of bronchiectasis are varied, and clinical heterogeneity is high, making prognosis and severity difficult to evaluate. CT plays an important role in the diagnosis and classification of ramadasis. Based on this, we analyzed the CT findings of patients with bronchiectasis and followed up patients with bronchiectasis to understand their disease progression and prognosis, so as to further analyze the role of CT biomarkers in the type and prognosis of bronchiectasis diseases.