Abstract: Objective　To investigate the seasonal variation of vectors in Jiande, China, and to provide a scientific basis for the control and prevention of related infectious diseases. Methods　Surveillance data of rats, mosquitoes, flies, and cockroaches in Jiande during 2008-2012 were analyzed with circular distribution method. Results　During 2008-2012 in Jiande, the peak period of seasonal variation in rats appeared from February 14 to November 3, with peak day at June 25; the peak period in mosquitoes appeared from May 21 to August 18, with peak day at July 5; the peak period in flies appeared from May 1 to September 7, with peak day at July 5; the peak period in cockroaches appeared from June 30 to November 16, with peak day at September 8. Conclusion　Circular distribution method can be used to master the seasonal variation of vectors quantitatively, so as to provide a scientific basis for the prevention of related infectious diseases.

Key words: Circular distribution method, Vector, Seasonal variation

摘要： 目的　掌握建德市病媒生物的季节性消长规律,为制定防制规划及控制相关传染病提供科学依据。方法　应用圆形分布法统计分析建德市2008－2012年鼠类、蚊类、蝇类、蜚蠊密度监测数据。结果　建德市2008－2012年鼠类季节性消长的高峰时点为6月25日,高峰时期为2月14日至11月3日;蚊类的高峰时点为7月5日,高峰时期为5月21日至8月18日;蝇类的高峰时点为7月5日,高峰时期为5月1日至9月7日;蜚蠊的高峰时点为9月8日,高峰时期为6月30日至11月16日。结论　圆形分布法能定量掌握病媒生物的季节消长规律,从而为预防相关传染病的传播和流行提供科学依据。

关键词: 圆形分布法, 病媒生物, 季节消长规律