Abstract: Objective To understand the awareness,knowledge on HIV/A IDS and mental health status among CSWs in Jiaozhou city.Methods Face-to-face questionnaire survey was conducted among commercial sexual workers(CSWs)recruited in a health center.Results Among 291 CSWs at age of 17～25,66.5% were collected athotels and Karaoke facilities.Most of the subjects were migrants and graduates of from junior middle school.Most of the subjects kenwthe routes of transmission,non-transmission and preventive methods of HIV/AIDS,but a fewof took measures.The subjects had discrimination and fear to A IDS patients.97.1% of subjects had STD related symptoms and most of them could not get normative treatment.Mental health survey showed that their scores were higher than that of normal,expect for relationship score.Conclusion CSWs in Jiaozhou city were athigh risk of STD/AIDS infection and A IDS knowledge education and behavior intervention should be conducted.