In　this　paper,　a　multiple　criteria　sorting　method　based　on　pairwise　comparisons　of　alternatives　in　the　group　decision　making　context　is　proposed.　The　method　uses　the　outranking　relation　as　decision　makers＇　preference　model.　It　requires　decision　makers　to　provide　pairwise　comparisons　of　some　alternatives.　It　chooses　a　consistent　pairwise　comparison　set　with　the　maximal　total　reliability　degrees　based　on　these　pairwise　comparisons　and　the　importance　degrees　of　decision　makers.　A　mixed　integer　linear　programming　model　is　built　to　calculate　the　range　of　classes　to　which　the　alternative　can　be　assigned　so　as　to　guide　decision　makers　to　specify　the　fittest　class　of　some　alternatives.　Then　a　representative　function　is　selected　to　determine　the　fittest　class　of　the　remaining　alternatives.　At　last,　a　sorting　example　of　venture　investments　is　provided　to　demonstrate　the　feasibility　and　rationality　of　the　proposed　method.