Abstract: Canine chronic bronchitis refers to chronic non ? specific inflammation of the trachea，bronchial mucosa，and surrounding tissues，usually due to long ?term stimulation of pathogenic factors，delay in treatment of acute cases，or improper husbandry. Through the diagnosis and treatment of a canine chronic bronchitis case，the pathogenesis and prevention methods were discussed to provide some references for the clinical diagnosis and treatment of this disease.

Key words: Canine； Chronic bronchitis； X?ray； The respiratory system

摘要： 犬慢性支气管炎是指气管、支气管黏膜及其周围组织的慢性非特异性炎症，通常是 由于病因长期刺激，或急性病例在治疗上的拖延，又或是饲养管理等引起的。本文通过对一 例犬慢性支气管炎病例的诊断和治疗，探讨其发病原因与防治，以期为临床工作提供一定的 参考。

关键词: 犬； 慢性支气管炎； X线； 呼吸系统