XQuery　is　a　functional　language　with　implicit　parallelism.　It　is　an　important　approach　to　improve　the　efficiency　of　XML　query　by　taking　full　advantage　of　multi-core　environment　in　the　parallel　implementation　of　XQuery　language.　In　this　paper,　we　propose　an　implementation　method　for　parallelizing　XML　query　represented　by　XQuery　programs　automatically.　According　to　the　features　of　its　functional　language,　an　XQuery　program　is　divided　into　a　number　of　tasks　that　can　be　executed　in　parallel.　Then,　on　the　basis　of　the　running　cost　evaluation,　three　kinds　of　parallelism　are　applied　to　different　tasks　and　they　are　data　parallelism,　task　parallelism　and　pipeline　parallelism.　Under　the　guidance　of　a　novel　scheduling　strategy,　the　execution　of　the　XQuery　program　is　parallelized　automatically.　The　experiments　show　that　this　approach　improves　the　efficiency　of　the　execution　of　XQuery　programs　and　the　computing　resources　of　multi-core　computer　are　used　efficiently.　©　2013　ACADEMY　PUBLISHER.