With　the　definition　of　workflow　management　system＇s　basic　component,　such　as　workflow　model,　process　object,　process　instance,　object　instance　and　etc,　the　main　workflow　models　based-on　two-tuple　were　founded,　and　transforming　model　based-on　triple　were　was　set　up.　The　related　logical　route　of　restructure　and　translation　were　presented.　Two　ways　of　coordination　were　proposed.　The　theory　and　the　way　of　coordination　oriented　workflow　model　are　discussed　emphatically.　In　order　to　meet　with　the　real　need,　a　workflow　instances　is　given,　which　is　based-on　model　decomposition　and　instance　transformation.