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Men who have sex with men (MSM) are at high risk for infection with human immunodeficiency virus type 1 (HIV- 1) because of risk behaviors such as multiple partners and unprotected anal intercourse (UAI).Approximately 5% to 10% of all new HIV-1 infections are transmitted by male homosexual behaviors globally.1 The HIV epidemic in China is currently spreading from high risk groups to the general population.The high risk behaviors in MSM and the relatively large size of this population suggest that they have the potential to significantly contribute to an increasing HIV-1 epidemic in China.2 The latest HIV-1 estimates from China indicate that 11% of the approximately 700000 infected individuals were infected through homosexual transmission,which has increased from 7.3% in 2005.