目的提高对鞭毛虫呼吸道感染的认识。方法报道30例鞭毛虫呼吸道感染,并进行临床资料分析。结果鞭毛虫常与支原体、衣原体混合引起呼吸道感染。临床表现发热、咳嗽、咽炎、支气管炎、肺炎。呼吸道分泌物涂片查见虫体是确诊的依据。甲硝唑治疗对大多数患者有效。结论对不明原因的发热、咳嗽、咽炎、支气管炎、肺炎患者,在抗菌治疗无效,用常见病难以解释时要注意少见病原体感染的可能。 Objective To improve the awareness of flagellates in respiratory tract infections. Methods Thirty cases of flagellates were reported, and clinical data were analyzed. Results flagellates often with mycoplasma, chlamydia mixed cause respiratory tract infection. Clinical manifestations of fever, cough, pharyngitis, bronchitis, pneumonia. Respiratory secretions smear see parasites diagnosis is based. Metronidazole treatment is effective in most patients. Conclusion For unknown causes of fever, cough, pharyngitis, bronchitis, pneumonia, antibacterial therapy ineffective, difficult to explain the common diseases should pay attention to the possibility of rare pathogens.