A method for car relocation is disclosed. The method is to transmit the ID of a mobile device to a network server, after the engine of a car is turned on. After the engine of the car is turned off, the automobile device or the mobile device transmits GPS coordinate data to the network server via a wireless method. If the automobile device or the mobile device fails to receive the GPS coordinate, the screen of the automobile device will display a frame showing the place where the car is parked, and transmit the related data. By means of the operation of the buttons of the frame, the related data can be transmitted to the network server by the automobile device or the mobile device via the wireless method, and the network server will store related data to overwrite original data.