在长安县肺吸虫病患者居住的山区捕获溪蟹及野生动物果子狸,观察其体内自然感染的并殖吸虫囊蚴,脱囊后尾蚴、童虫,成虫和虫卵的形态 以囊蚴人工感染家犬,观察45、90、180、380天虫龄的虫体和虫卵的形态。根据各期形态特征和测量数值,并与国内报道的并殖吸虫资料比较,鉴定为斯氏并殖吸虫(斯氏狸殖吸虫)。少数虫体形态和数值虽有差异,总体上仍具有斯氏并殖吸虫主要特征。 Crabs and wild civets were caught in mountainous areas where paragonimiasis patients lived in Chang’an County. Paracariasis, coccidiosis, coccidia, juveniles, adults and eggs of naturally infected paragonimiasis were observed in vivo. Dogs, observed 45,90,180,380 days age worm body and egg morphology. According to the morphological characteristics of each stage and the measured values, and compared with the domestic reports of paragonimiasis data, identified as Paragonimus spp (Clostridium spp.). Although there are some differences between the morphology and the numbers of a few number of parasites, they still have the main characteristics of Paragonimus spp.