GPS数据如何实时地与GIS地图数据匹配已经成为GPS车辆导航系统中的关键问题之一。通过对GPS车辆导航中地图匹配问题的研究，认为可以采用误差缓冲区分析方法对GPS动态定位数据与GIS地图数据进行地图匹配。在实际应用中业已证明该方法效率高、可操作性强，有利于提高GPS车辆导航系统在应用中的精度和可靠性。-How real-time GPS data with GIS map data matching has become a GPS vehicle navigation system is one of the key issues. GPS vehicle navigation by map matching studies, that error buffer analysis method can be used for dynamic GPS positioning data and GIS map data for map matching. In practice, this method has proven high efficiency, operability, help to improve GPS Vehicle navigation system in the application of precision and reliability.