Objective The study was conducted to determine the community structure and seasonal changes of mosquitoes based on light-trap surveillance,providing evidence for the development of prevention and control of mosquito infestation.Methods Adult mosquitoes were captured,classified and identified at surveillance sentinels from April to November in 2007 to 2008.Results A total of 7685 mosquitoes were captured using light traps,including Culex pipiens pollens,Cx.tritaeniorhynchus,Anopheles sinensis,Aedes albopictus and Armigeres subalbatus.The average density was 4.06 in 2007 and 3.46/(light·hour) in 2008,the seasonal peak of density was from May to July according to the light-trap surveillance,with similar pattern by labor hour method.Conclusion The light-trap surveillance was applicable for reflecting the seasonal changes of domestic and semi domestic mosquitoes with the exception of Ae.albopictus.The light-trap capture was recommended to last three or fifteen hours.