Abstract: 　Objective To offer approaches to diagnosis and treatment of Angiostrongylus cantonensis infection on the basis of analyzing three lethal cases of the disease. Methods Clinical manifestations, pathological changes and species identification were pursued. Results Angiostrongyliasis is usually neglected in medical departments.The three cases here reported were all misdiagnosed and had not receiced anthelmintic treatment hence fatality ensued. Conclusion Early examination of CSF,bronchial lavage fluid and feces is urged so as to secure accurate diagnosis and conduct efficacious anthelmintic therapy to cure the patients.

Key words: Angiostrongyliasis, Angiostrongylus cantonensis, CSF