目的：提高对人类比翼线虫病——一种罕见的人体寄生虫疾病的认识。方法：报告国内首次同时发生的３例人类比翼线虫病。结果：该病的临床特点为刺激性咳嗽、咯血和消瘦，抗生素治疗无效；纤维支气管镜可发现气道内蠕动的鲜红色血丝状物。结论：本病的发现提示临床上对一些不明原因的慢性咳嗽、咯血、消瘦，病前有进食未煮熟食物的患者，应注意到人类比翼线虫病的存在。痰或纤支镜检查发现比翼线虫可确诊。 PURPOSE: To raise awareness of human raceworm - a rare human parasitic disease. Methods: Three consecutive cases of human giardiasis in China were reported. Results: The clinical features of the disease were irritating cough, hemoptysis and weight loss, and antibiotic therapy was ineffective. Fiberoptic bronchoscopy could detect bright red blood-streaking in the airway. CONCLUSIONS: The findings of this disease suggest that clinically unresponsive chronic cough, hemoptysis, weight loss, and pre-existing eating of uncooked food should be noted for the presence of human gondii. Sputum or bronchoscopy found that wing nematodes can be diagnosed.