Supply　chain　cooperation　partner　selection　plays　a　significant　role　in　supply　chain　research.　In　order　to　solve　the　adverse　selection　during　selecting　supply　chain　cooperation　partner,　the　screening　model　is　come　up　under　some　particular　hypotheses.　This　paper　analyses　the　optimum　solution　of　the　model　in　all　cases,　and　designs　contracts　on　the　basis　of　optimum　solution.　Under　certain　conditions,　principal　can　screen　agent　types　and　establish　supply　chain　partnership　with　some　agents.　The　conclusions　of　this　paper　have　particular　significance　for　correlative　decision-makers　in　reality.　©2010　IEEE.