Beidou vehicle positioning data and railway line data matching method and system

The invention provides a Beidou real-time positioning data and railway line data matching method and system, and the method comprises the steps: obtaining Beidou real-time positioning data of a vehicle, dividing the Beidou real-time positioning data according to a preset interval, and extracting the positioning data of to-be-matched points; taking railway lines with the to-be-matched points as circle centers and the vertical distances smaller than a preset radius as candidate railway lines of the to-be-matched points; referring to the total distribution condition of the railway lines, and connecting the candidate railways of the first to-be-matched point and the next to-be-matched point through selectable railway lines to serve as candidate railway connecting lines; starting from the lastto-be-matched point, taking the line with the shortest path in the candidate railway connection lines as the railway connection line of two adjacent to-be-matched points; and from the last point to the first point to be match