Aiming　at　the　current　situation　that　the　highway　milepost　and　geodetic　coordinates　matching　methods　are　less　intelligent　and　less　accurate,　resulting　in　the　efficiency　and　accuracy　of　the　milepost　matching　methods　cannot　meet　the　requirements　of　practical　applications,　this　paper　applies　centimeter-level　combined　inertial　navigation　system　and　binocular　camera　to　collect　road　spatial　information　and　image　data,　adopts　trajectory　planning　method　and　image　recognition　technology　for　data　analysis,　and　obtains　continuous　collection　trajectory.　Based　on　the　principle　of　3D　scene　restoration　by　binocular　stereo　vision,　this　paper　proposes　a　method　to　obtain　the　geographic　coordinates　of　mileage　stakes　through　the　parallel　view　of　stake　number　plate　and　realizes　the　high　accuracy　and　fast　matching　of　highway　mileage　stakes　and　geodetic　coordinates.　The　experimental　results　show　that　the　method　can　better　achieve　the　rapid　matching　of　highway　mileage　stakes　and　geodetic　coordinates,　and　the　average　accuracy　of　stakes　matching　reaches　the　decimeter　level,　which　can　meet　the　requirements　of　most　current　application　scenarios.