兰氏贾第鞭毛虫(简称贾第虫)的胆道感染临床上易被忽略。本文6例均曾误诊,其中诊断为胆囊炎2例,诊断为胆道蛔虫症、溃疡病、肝炎、结核性腹膜炎各1例。后均经十二指肠引流检查发现贾第虫,并结合相应的胆道症状而确诊。均经阿的平、灭滴灵治疗痊愈出院。 Giardia lamblia (referred to Giardia) biliary tract infection is easily overlooked. In this paper, 6 cases have been misdiagnosed, of which 2 cases diagnosed as cholecystitis, diagnosis of biliary ascariasis, ulcer disease, hepatitis, tuberculous peritonitis in 1 case. After the duodenal drainage check found Giardia, and combined with the corresponding diagnosis of biliary symptoms. Both by the flat, metronidazole treatment cured.