Method and device for acquiring current accurate position of train

The invention discloses a method and device for obtaining the current accurate position of a train, and relates to the technical field of data processing. The device is characterized in that a decoder acquires train protection alarm data and transmits the data to a central processor; the central processor analyzes the train speed, the route mileage and the route row type; the satellite receiving module transmits satellite data to the central processor; the central processor analyzes and obtains longitude and latitude information; the communication module comprises a network module which is connected with a base station and obtains local base station information; the network module is connected with the background server, downloads latitude and longitude electronic fence data of a railway line, obtains local latitude and longitude data, uploads the latitude and longitude data, and obtains a local line number from the background server by querying a local database; and the Bluetooth module and the communication