胆总管异物是指医源性或非医源性的异物进入胆总管造成临床症状的疾病。本文报道1例胆总管异物的治疗经过。患者既往有胆总管切开取石术史，主要症状是上腹痛。入院完善腹部CT考虑肝内外胆管结石及胆总管异物，行胆总管切开取出胆总管鱼刺样异物，同时取出肝内外胆管结石。本文报道此例并探讨其可能的发病机制，以提高对此类疾病的认识，避免误诊漏诊。

Foreign body in the common bile duct refers to a disease where iatrogenic or non-iatrogenic foreign bodies enter the common bile duct and cause clinical symptoms. This article reports the treatment process of one case of foreign body in the common bile duct. The patient had a history of common bile duct exploration and lithotomy, with the main symptom of upper abdominal pain. Upon admission, abdominal CT examination suggested intrahepatic and extrahepatic bile duct stones as well as a foreign body in the common bile duct. The patient underwent common bile duct exploration to remove the fishbone-like foreign body in the common bile duct, and the intrahepatic and extrahepatic bile duct stones were also removed simultaneously. This case is reported herein, and its possible pathogenesis is discussed to improve the understanding of such diseases and avoid misdiagnosis and missed diagnosis.