As　the　development　of　wireless　network　and　3rd　generation　communication,　location　based　service　will　have　broad　application　prospects.　At　the　same　time,　since　the　screen　of　mobile　terminal　is　small　and　resolution　is　slow,　the　methods　of　desktop　cartographic　visualization　can　not　be　directly　copied　to　mobile.　Therefore,　a　mobile　cartographic　visualization　strategy　based　on　cache　of　CGML　is　proposed.　In　the　strategy,　firstly,　the　basic　and　extended　query　frames　are　generated　in　the　center　of　terminal＇s　position.　And　then,　the　cartographic　data　received　in　the　basic　query　frame　is　visualized,　and　the　extended　query　frame　data　is　built　into　CGML　file　that　is　cached　in　the　terminal.　Finally,　the　cached　CGML　file　is　used　to　follow-up　operations　of　cartography.　©　2010　IEEE.