Objective   In order to explore the factors influncing the people's condomuse in our country and the different condom use probability.

  Methods   A survey with structured-questionnaire was conducted among 192 male commercial sex clients detained in Re-educational Detention Center of Shenzhen.

  Results   The frequency of condom use was significantly related with the character istics of partnership.The probabilities of insisting a condom between male with his commercial partner, non-commercial temporary partner and regular partner were 0.494 6, 0.332 6 and 0.160 0, separately, while the probabilities of non-condom use between male with his commercial partner, non-commercial temporpary partner and regular partner were 0.166 1, 0.281 2 and 0.525 8, separ ately.

  Conclusion   The impo rtant role of partner relationship in people's sex behaviors was suggested in the study of condom-use frequency in HIV/AIDS prevention area.