Cached　materialized　view　has　lots　of　benefits,　but　it　has　inconsistency　problem　when　the　data　source　is　modified.　This　paper　proposes　an　incremental　maintenance　algorithm　IMA　to　implement　incremental　maintenance　of　materialized　XPath　view.　The　characteristics　of　IMA　are:　(1)　It　can　establish　an　incremental　maintenance　program　automatically;　(2)　The　incremental　maintenance　program　is　simple　and　its　function　is　reassembling　the　materialized　XPath　view　to　obtain　a　consistent　view;　(3)　The　incremental　maintenance　program　is　written　in　XQuery　language　and　can　be　executed　by　any　XQuery　engine;　(4)　The　only　auxiliary　data　used　to　maintain　the　materialized　XPath　view　is　the　incremental　maintenance　program　and　its　size　cost　is　very　small.　Experiments　have　shown　that　this　approach　outperforms　view　recomputation.