目的 了解天津市2011-2015年蚊虫种群构成、季节消长规律及不同生境蚊密度，为蚊虫防治和蚊媒传染病的控制提供参考及依据。方法 于2011-2015年4-11月，采用诱蚊灯法对天津市16个区（县）进行成蚊密度监测，对数据进行统计分析。结果 共捕获蚊虫393 176只，隶属于2亚科3属4种，其中淡色库蚊为优势种，占捕蚊总数的94.98%。成蚊密度高峰期为7-8月，2011年7月成蚊密度最高，达42.08只（灯/·h）。5年中不同生境均以牲畜棚密度最高，平均成蚊密度为24.34只（灯/·h）。结论 基本掌握了天津市蚊虫的密度、种群构成及季节消长情况，为蚊虫及蚊媒病的防制提供指导意见。

Objective To determine the species composition and seasonality of mosquitoes in different environments in Tianjin, then provide scientific basis and proposal for the prevention and control of mosquitoes and mosquito-borne diseases. Methods From April to November during 2011 to 2015, mosquitoes were captured by light trapping in 16 cities or countries of Tianjin, and then the data were analyzed. The adult mosquito surveillance data from every district collected by light trapping were analyzed. Results From 2011 to 2015, 393 176 mosquitoes were captured,which belonged to 4 species, 3 genera, 2 subfamilies, and Culex pipiens pallens was the predominant species, accounting for 94.98% of the total number of mosquitoes. The active peak of mosquitoes was from July to August, the highest density appeared in July in 2011, which is 42.08/(trap·h). In different environments, the density in livestock shed was always the highest from 2011 to 2015. The average density was 24.34/(trap·h). Conclusion The species composition and seasonal fluctuation of vectors mosquitoes were preliminarily known. And the results provide guidance for mosquito and mosquito-borne diseases control.