目的 掌握吉林省蚊虫种群分布及季节消长规律，为防控蚊媒传染性疾病提供参考。方法 采用诱蚊灯法，于2015年5－10月在吉林省9个市（州）城区开展蚊虫密度监测。结果 共捕获成蚊13 397只，隶属2亚科3属4种，其中淡色库蚊（46.33%）为优势种。全年平均蚊密度为1.00只/（灯·h），成蚊密度的季节消长呈单峰曲线，高峰期在8月。结论 初步掌握了吉林省城区蚊虫的种群密度、分布和季节消长情况，淡色库蚊为居民区、公园、医院和农户的绝对优势种，牲畜棚的优势种为刺扰伊蚊，全省6－9月可开展蚊虫防治工作。

Objective To study the population distribution of mosquitoes and their seasonality in Jilin province and to provide reference for controlling mosquito-borne diseases. Methods From May to October in 2015, light traps were used for mosquito density surveillance in the urban areas of nine cities in Jilin province. Results A total of 13 397 mosquitoes (4 species, 3 genera) were collected, Culex pipiens pallens was the predominant species, accounting for 46.33% of all mosquitoes. The annual average density of mosquitoes was 1.00 mosquito per hour. The seasonality of mosquitoes was unimodal, and the peak occurred in August. Conclusion The population distribution of mosquitoes and their seasonality in the urban areas of Jilin province were well documented in this study. Culex pipiens pallens was the predominant species of mosquitoes in urban, the park, the hospital and rural residential areas. Besides, Aedes vexans was also predominant species in the barns. It is recommended to carry out mosquito control from June to September in Jilin province.