Disclosed is a mobile terminal network port management method and device. The method includes: after PPPOE dial up completes, scanning current mobile network equipment port numbers and acquiring currently occupied mobile network ports; detecting and analyzing whether the currently occupied mobile network ports are virtually occupied ports or not; if yes, releasing said virtually occupied ports. The abovementioned technical solution solves an existing problem of possible virtual occupancy of network ports after a PPPOE connection is established, thereby greatly enhancing availability of the mobile terminal and improving the user experience on the terminal.