【摘要】 目的　查清广西主要林区并殖吸虫病自然疫源地分布及虫种。方法　解剖蟹类分离囊蚴并感染动物获取成虫鉴定虫种、玻片压碎法镜检螺类自然感染尾蚴、粪检或解剖动物查找虫卵和成虫了解动物宿主感染、以成虫抗原作ＩＤ及ＥＬＩＳＡ，结合痰液和粪便检查确定人体感染。结果　在３７ 县（市）检查蟹类４ 科８ 属２０ 余种共２０２０８４ 只，有１５县（市）从圆顶华溪蟹等８ 种共１２７５ 只蟹中查获并殖吸虫囊蚴，自然感染率在０．１～２２．２％ 之间；检查淡水螺类４４８４７ 只，携带并殖吸虫尾蚴１５７ 只，自然感染率在０．３％ ～０．４％ 之间；检查６ 种动物粪便、内脏４０８份和１６ 份，发现果子狸等３ 种动物的１７ 份粪便中有并殖吸虫卵。那坡、资源、兴安和融水４县有人体感染病例２５ 人。根据囊蚴及成虫的形态特征初步鉴定有斯氏、异盘、巨睾和白水河（或歧囊）４ 种并殖吸虫。结论　桂西、北山区广泛存在并殖吸虫病自然疫源地，斯氏并殖吸虫是当地的优势虫种，分布于融水、龙胜等１３ 个县更多还原

【Abstract】 Aim\ To find out the natural of paragonimiasis in some main forest regions in Guangxi,and the species as well.Methods\ The adult worms were employed for identificating the species of paragonimus.They were collected from experimental animals which had been inoculated with metacrecariae of paragonimus separated from crabs by dissection and sedimentation method.Cercarial infection of snails was determined by crushing.The snails between two slides.Fecal worms were used for understanding.The infectios of animal reservior hosts.ID and ELISA using adult worm antigen in combination with sputum and fecal examination for paragonimus eggs were used for confirmation of human infections.Results\ A total of 202084 crabs which belonging to 4 families 8 genera 20 species respectively,were collected from 230 streams in 37 counties.8 species of crabs(sinopotamon teritisum etc.)collected from 15 counties were found to carry metacercariae of paragonimus with infection rates 0.1%～22.2%. A total of 44847 fresh water snails were dissected,157 of them were found carrying paragonimus cercariae with infection rates 0.3%～0.4%.A total of 408 specimens of animals were examined,17 specimens form 3 species(paguma larvata etc.)were positive for paragonimus eggs.25 cases of human infections were discovered in 4 counties(Rong-Shui,etc.).On the basis of morphological characterisitics of adult worms,4 species of paragonimus were preliminarily confirmed.They were P.s,P.h,P.m and P.d(or P.b).Conclusion\ The natural focuses of paragonimiasis were extensively distributed in the mountainous districts of northern Guangix.P.S.was a dominant species which scattered in 13 countie(Rong-Shui,Long-Sheng,etc).更多还原