A data updating method for an Internet map service platform and a system thereof are applied to an electronic device. The electronic device is linked to an Internet map service platform by a wire or wireless network, and the Internet map server platform has a plurality of map data. The method includes the following steps: logining the map service platform; getting a piece of map data of a present location from the map service platform; recording a piece of route data including GPS locus of the present location; comparing the gotten map data with the route data to find whether they have a difference; and uploading the route data having the difference to the map service platform.