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元江流域90年代平均年带虫发病率26．71／万；可划分为基本消灭的坝区、流行不稳的山区和难于控制的河谷区；人口流动使山区和河谷疟疾暴发流行时有发生。主要媒介的外栖性和外食性，以及人群露宿在田间过夜的习惯降低了杀虫剂室内滞留喷洒的防疟效果；经费投入不足，管理及基层卫生服务模式滞后使传染源得不到即时治疗和根治，媒介控制措施达不到要求的范围、频率和质量标准，而难于阻断疟疾传播。研究揭示元江流域应采取因地制宜，分类防治的综合性策略。
In the 1990s, the average annual incidence rate of mosquitoes in the Yuanjiang River Basin was 26.71 / million; it could be divided into basically eroded dam areas, unstable mountainous areas and difficult to control valleys; and population movements made malaria outbreaks in mountainous areas and valleys occasionally occurred. Habitat and eating habits of major media and overnight overnight stay in the field have reduced the anti-malarial effect of insecticide indoor delineation spraying; inadequate funding, lack of management and lag in primary health care services have prevented the source of infection from receiving immediate treatment And radical, media control measures fail to meet the requirements of the scope, frequency and quality standards, and difficult to stop the spread of malaria. The research reveals that the Yuanjiang River Basin should adopt a comprehensive strategy of preventing and controlling according to local conditions and classification.