ObjectiveTo understand awareness of knowledge on AIDS knowledge among construction workers,in order to carry out a more publicity way for health education on AIDS among them.MethodsQuestionnaire were use to interview construction workers of 5 construction site in Lingshan county city,Gangxi,Included 1000 construction workersResultsThe average awareness rate of AIDS knowledge was 59.0%,the awareness rate of 3 route of transmission was 66.2%,the awareness rate of non transmission route of AIDS was47.3%.ConclusionThe average awareness rate of AIDS knowledge among construction workers was only 59.0%,It istill far behind the 2010 action plan of AIDS in China(85%),It is urgent to strengthen publicity of knowledge on AIDS among flowing population.