To draw the track of roller compacting in the compaction process and to realize the real-time monitoring of the rolling track, by means of the analysis of real time data of GPS receiver, the geodetic coordinates of the roller in the WGS-84 world geodetic coordinate system are obtained. Using the Gauss projection positive algorithm, the geodetic coordinates are converted into plane coordinates in the 54 plane coordinate system of Beijing, then the plane four parameter conversion method is used to get the construction coordinates required by the roller and the construction plane coordinate system of the roller is set up, the real time positioning of the roller in the compaction process is realized. Finally, according to theoretical analysis and experiment, the longitudinal and lateral positioning method of roller compacting track is verified . The results show that the roller compaction trajectory plotted by the plane location algorithm is fast, reliable and practical, which can realize real-time monitoring of roller compaction trajectory during compacting process.