筑后川流域地跨佐贺县与福冈县,过去是严重的日本血吸虫病流行区。传播媒介是片山钉螺。1953年发生大洪水,钉螺扩散蔓延,两县钉螺分布面积约有6800公顷。1949～1950年,曾先后采用药杀、修筑混凝土沟,开沟排水,填洼地、平整土地、兴修水利及农田轮作等措施灭螺,收到一定效果,钉螺孳生地逐渐缩小。近年,佐贺、福冈县根据筑后川水利资源开发计划,修筑大坝,结合消灭钉螺。作者分析了该地区1974～1978年的钉螺分布情况,以考核过去灭螺效果,并为今后工作提出措施。 Chikugo River basin across Saga and Fukuoka, the past is a serious epidemic of schistosomiasis japonicus. The media is Katayama snail. In 1953, there was a flood and the spread of snail spread. There were about 6,800 hectares of snails in both counties. From 1949 to 1950, it used measures such as killing drugs, building concrete ditches, ditching drainage, filling depression, leveling up land, water conservancy and rotation of farmland to control snails. The results showed that snail breeding sites were gradually reduced. In recent years, Saga Prefecture and Fukuoka Prefecture have built dams based on the Chikugo River water conservancy resource development plan, and eliminated snails. The author analyzed the distribution of Oncomelania snails in the area from 1974 to 1978 in order to assess the effect of past snail elimination and put forward measures for future work.