目的探讨名山县疟疾发病下降过程中 ,社会与环境等因素变化对发病的影响。方法对影响疟疾发病的相关因素资料作前后对比。结论　名山县疟疾下降因素中 ,以积极防治为主导在社会环境因素共同作用下 ,发病率持续下降 ,从 1 993— 2 0 0 0年 8年来 ,从 86.1 9/万下降到 1 .82 /万 ,达历年最低点。 Objective To investigate the impact of changes in social and environmental factors on the incidence of malaria in Mingshan County during its decline. Methods Before and after the comparison of the relevant factors affecting the incidence of malaria. CONCLUSIONS: The incidence of malaria in Mingshan County is dominated by active prevention and control. The incidence of malaria dropped continuously from 86.1% to 1.82% in the eight years from 1993 to 2000 under the joint action of social and environmental factors , Reaching the lowest point of calendar year.