Twig　pattern　matching　is　core　operation　in　XML　query　processing.　Although　holistic　twig　pattern　matching　algorithms　have　been　studied　intensively　nowadays,　little　attention　is　paid　on　positional　predicates　defined　on　navigation　axis.　These　algorithms　cannot　be　used　to　implement　XPath　queries　with　positional　predicates,　since　the　query　results　fail　to　be　selected　from　the　pattern　matching　results.　For　implementation　of　XPath　query　with　the　positional　predicates,　this　paper　extends　the　traditional　twig　pattern　to　a　new　one　called　ExTwig　to　deal　with　both　positional　predicates　and　following-sibling　axis.　The　corresponding　holistic　twig　pattern　matching　algorithm　TwigPos　is　also　proposed　to　process　ExTwig　query.　Comparison　experiments　on　large　benchmarks　show　that　our　algorithm　is　efficient　and　practical.