The　compatible　method　set　is　determined　by　using　fuzzy　cluster　analysis　method　in　this　paper.　To　make　up　for　the　shortage　of　the　existing　combination　evaluation　methods　(CEMs),　a　drift-based　CEM　is　proposed　on　basis　of　the　study　on　drift　measurement　in　the　conclusion　of　different　single　evaluation　method.　A　practical　example　is　given　to　show　the　effectiveness　of　drift-based　CEM.