Abstract: This paper reports the diagnosis and treatment process of a patient with severe anemia caused by hookworm and Ascaris lumbricoides co⁃infections, so as to provide insights into clinical diagnosis and treatment and avoid misdiagnosis and underdiagnosis of parasitic infections. Living parasites were found by endoscopy, which were morphologically identified as hookworm and A. lumbricoides, and routine stool examinations detected hookworm and A. lumbricoides eggs. The patient was diagnosed with severe anemia caused by hookworm and A. lumbricoides co⁃infections by means of clinical symptoms, epidemiological history, endoscopic findings, and laboratory tests. Following blood transfusion, hemostasis, oral administration with albendazole, and symptomatic treatments, the patient showed remarkable symptomatic improvement and had a good prognosis.

Key words: Hookworm, Ascaris lumbricoides, Co?infection, Severe anemia, Endoscopy 

摘要： 本文报道了1例钩虫合并蛔虫双重感染致重度贫血患者的诊治过程，旨在为寄生虫感染临床诊疗提供参考，以避免误诊及漏诊。该患者内镜检查发现寄生虫活体，经形态学鉴定为钩虫、蛔虫；粪便常规检查检出钩虫卵、蛔虫卵。结合其临床症状、流行病学史、内镜检查以及实验室检查结果，诊断为钩虫合并蛔虫双重感染所致重度贫血。给予输血、止血、口服阿苯达唑驱虫及相应对症治疗后，患者症状显著改善，预后良好。

关键词: 钩虫, 蛔虫, 双重感染, 重度贫血, 内镜检查