Incremental　computation　has　been　broadly　applied　in　computer　software　field,　but　it　needs　complex　algorithm　design　and　tough　software　maintenance.　We　develop　an　XQuery　incremental　computation　program　automatic　generation　method　according　to　the　characteristics　of　XQuery　language.　This　method　can　implement　program　transformation,　generate　incremental　computation　program　code　automatically　in　light　of　the　input　data　modification　of　this　computation,　and　obtain　new　result　based　on　the　original　one.　The　execution　performance　of　the　incremental　computation　program　is　better　than　that　of　recomputation.