Abstract: A survey of Angiostrongylus cantonensis in snails, slugs, prawns, toads and rats was carried out in Guangzhou, from Feb 1981 to June 1982. The results were as follows: (1) 164 out of 10,034 Rattus norvegicus (1.6%) were naturally parasitized with Angiostrongylus cantonensis. A comparison between the parasitic fauna of three different districts in Guangzhou showed that the infected rate was higher in Yuexiu (2.3%) than in Liwan (1.2%) and Haizhu (0.3%). (2) 98 out of 330 giant African snails, Achatina Julica (29.7%) were parasitized with the third stage larvae of Angio-strongylus cantonensis. (3) In 63 Vaginufus sp. and 494 Philomycus bilineatus were recovered respectively 56,060 and 1,577 third stage larvae. (4) The role of Bufo me-lanostictus and a species of freshwater prawns, Macrobrachium nipponense as paratenio hosts for Angiostrongylus cantonensis third stage larvae could not be demonstrated