[目的 ]掌握农村地区鼠类种群和鼠密度季节性消长规律 ,为防制提供科学依据。 [方法 ]1991～ 1999年按全国鼠情监测工作方案。 [结果 ]仙居县农村地区室内有鼠科 6种 ,食虫目 1种 ,主要家鼠为褐家鼠、小家鼠和黄胸鼠。野外有鼠科 9种 ,食虫目 1种 ,以黑线姬鼠为优势种。室内鼠密度高峰期为 12月至次年 1月 ,野外鼠密度高峰期为 6月和 12月 [Objective] To master the rule of seasonal fluctuation of rodent population and rat density in rural areas and provide a scientific basis for prevention and control. [Methods] From 1991 to 1999, the work program of rat monitoring in China was conducted. [Result] There were 6 species of murine and 1 species of insects in rural area of ​​Xianju County. The main house mice were Rattus norvegicus, Mus musculus and Rattus flavipectus. There are 9 species of murine in the wild, 1 species of insect insects, Apodemus agrarius is the dominant species. Indoor rat density peak from December to January next year, the peak of outdoor rat density in June and December