Addressing HIV-1/AIDS problem in China’s complex socioeconomic environment has never been straightforward Dynamic economic changes over the past few decades continue to create new challenges to intervention eforts particularly among one of the worst hit and hardest to reach populations,men who have sex with men(MSM).MSM represents a diverse population coming Addressing HIV-1 / AIDS problem in China’s complex socioeconomic environment has never been straightforward Dynamic economic changes over the past few issues continue to create new challenges to intervention eforts especially among one of the worst hit and hardest to reach populations, men who have sex with men (MSM) .MSM represents a diverse population coming