Abstract: Disclosed is a position tracking system and method for a portable terminal. If a portable terminal is connected to a computer via wired/wireless communications, the portable terminal transmits a certain software program and identification information to the computer so as to silent-install the certain software program on the computer. Upon the completion of the installation of the software program, the computer transmits the identification information of the portable terminal and the position information of the computer to the server, and the server checks whether or not the portable terminal is the lost terminal, and if the portable terminal is determined to be the lost terminal, notifies the position information to the user having lost the portable terminal.