报告了中国大陆5地日本血吸虫自然隔离群的尾蚴、成虫和卵的形态度量学的比较结果。同时,另以日本和菲律宾品系的日本血吸虫作为参考。结果表明,虽然同一隔离群的尾蚴、成虫和卵的大小呈现变异,但是云南隔离群的尾蚴体部大小以及在5种可容宿主的成虫体长和雄虫含7个睾丸的百分比均较安徽、湖北、广西和四川4地隔离群的为短而低,差别有显著性意义。四川隔离群的卵指数(宽/长)最高,故卵呈宽短型,而广西和湖北隔离群的最低,呈狭长型,云南和安徽的则介于两者之间。 The results of morphometric comparison of cercaria, adult and egg of the natural isolates of Schistosoma japonicum in 5 mainland China were reported. At the same time, the other Japanese and Philippine strains of Schistosoma japonicum as a reference. The results showed that although the sizes of cercariae, adult eggs and eggs of the same isolates showed variation, the body size of the cercariae in Yunnan isolates and the percentage of body length of the five host tolerant adults and the percentage of male testis in seven testis were significantly higher than those of Anhui, Hubei, Guangxi and Sichuan 4 groups of short and low, the difference was significant. The egg index (width / length) of Sichuan isolates is the highest, so the eggs are short and short, while the lowest isolates of Guangxi and Hubei are long and narrow. Yunnan and Anhui are between the two.