三峡库区处于四川、湖南湖北两大血吸虫病流行区之间。迄今为止未发现有血吸虫病流行。作者认为可能与库区严重而频繁的干旱、生产条件有着重要的关系．随着经济的发展，库区移民生产基地水利设施的完善，田土的改造，水土流失的治理等环境因素的变动，会使库区适于钉螺生长的地域扩大，从而增加了血吸虫病流行的可能性。因此建议在改善农业生产条件的过程中要加强管理和技术指导，严格执行国家标准，确保三峡生产基地的安全。 Three Gorges reservoir area is located in Sichuan, Hunan and Hubei between the two schistosomiasis endemic areas. So far no schistosomiasis epidemic was found. The author thinks it may be related to severe and frequent droughts and production conditions in the reservoir area. With the economic development, the environmental factors such as the improvement of water conservancy facilities in the resettlement base of the reservoir area, the transformation of the soil and the control of soil and water loss will enlarge the area suitable for the growth of snails and increase the possibility of schistosomiasis epidemic Sex. Therefore, it is suggested to strengthen management and technical guidance in the process of improving agricultural production conditions, strictly implement the national standards and ensure the safety of the Three Gorges production base.