Positioning method and device

The invention provides a positioning method and device. The positioning method comprises the steps that a terminal requests ephemeris information, wherein the ephemeris information is obtained and processed in a public network, and the ephemeris information processed by the public network is ferried into a private network through a server, and the terminal analyzes the ephemeris information processed by the public network and carries out the positioning according to the analyzed ephemeris information. The positioning device comprises an obtaining unit used for obtaining and processing ephemeris information, a ferry unit for monitoring and ferrying the ephemeris information, a processing unit for positioning, and an acquisition unit for acquiring and processing ephemeris information, wherein the ferry unit monitors the ephemeris information processed by the acquisition unit and ferries the ephemeris information to the processing unit; and the processing unit acquires the ephemeris information and performs posi