Abstract: ObjectiveTo getinformation of AIDS relevant knowledge and risk behavior of female sex workers.MethodsTwo-stage proportion probability sampling methods was applied to select FSWs from different kinds of entertainment places and questionnaire survey was conducted.ResultsThe UNGASS indicator awareness rate was 35.9%,there was statistical difference among the awareness rate of FSW(χ²=294.7,P<0.001).The proportion of using condom during the latest commercial sex behavior was 32.4%,there was statistical difference between different level of education background(χ²=56.42, P<0.001).The proportion of drug users among the FSW was 0.9%.There were 31.0% of subjects had similar symptoms and signs of STD in the past year,and 30% of them like to choose to see doctors at private clinics.78.9% subjests were educated on HIV/AIDS prevention.ConclusionThe baseline data showed that UNGASS indicator awareness rate was low,the persistent condom use rate was low,there were drug users among FSW investigated,which made ithard to control the sexual transmission HIV/AIDS,the intervention needs to be strengthened,besides the intervention of FSW.The intervention should include the whole population.