OBJECTIVETo analyze sexual behavior characteristics and sexually transmitted diseases such as AIDS infections in man who have sex with men (MSM) of Beijing Chaoyang district.

METHODSThrough selecting 10 MSM as seed in Chaoyang district of the existing education member companion in its main activity place, using snowball sampling to select 1008 people that 16 years old or above, nearly a year had sex with male in Chaoyang to conduct an investigation.Questionnaires were used to investigate the general conditions, characteristics of sexual behaviors, condom usage, AIDS knowledge awareness and sexually transmitted diseases history. Each participant was asked to exsanguinated 5 ml peripheral blood for applying ELISA for HIV, syphilis helicoids detection and HIV positive samples confirm test. Using χ(2) test on the statistical analysis of the data.

RESULTSIn the 1008 MSM, most of them were with the age of 20 - 29 years old (66.6%, 671/1008), giving priority to unmarried (79.1%, 797/1008), college degree and above culture during accounted for 43.3% (436/1008), 56.2% (566/1008) had both male and female sexual partners; the rate of temporary sexual partners who were one-night stand objects or friends or guest was 72.2% (226/313). The forever condom utilization rate was 29.0% (170/587) in MSM who had both male and female sexual partners, lower than that who had both male and female sexual partners (47.2%, 345/731). That the study objects of HIV infection who can use condom correctly rate was 3.6% (16/442), and that who never or occasionally used condom rate was 8.5% (24/228). AIDS, gonorrhea and other sexually transmitted diseases (to give priority to the acuteness wet wart) infection rates were 4.8% (6/124), 10.5% (13/124) and 8.9% (11/124) in those who had the history of group sex, and that was 5.9% (52/884), 1.9% (17/884) and 2.3% (20/884) in those who without the history of group sex. The research object's gonorrhea and other sexually transmitted diseases (to give priority to the acuteness wet wart) who provided commercial sex service infection rates were 7.7% (9/117) and 6.8% (8/117), significantly higher than those who did not provide a commercial sex service object of study subject (2.4% (21/891)and 2.6% (23/891)).

CONCLUSIONHIV infection is high among MSM population. Types and identification of sexual partners, and condom use are associated with HIV and STD infection.