The definition of MSM,distribution,sexual features of MSM and the prevalent status of AIDS/HIV in China are summarized in this paper for offering referrence to intervention of MSM in future.

• 对男男性接触者的定义,我国男男性接触者的分布情况、性行为特征及艾滋病流行情况进行综述,以期望为今后男男性接触者的研究和干预工作提供参考。