The invention relates to the technical field of vehicle-mounted terminals, and discloses a vehicle-mounted terminal remote upgrading method based on an FTP (File Transfer Protocol), which comprises the following specific steps that: S1, a TSP (Transport Service Provider) platform issues a remote upgrading instruction; S2, the vehicle-mounted terminal responds and requests to download a software upgrade package; S3, the vehicle-mounted terminal downloads a software upgrade package, and verifies legality and a software version number; S4, the vehicle-mounted terminal starts to upgrade; S5, if the upgrade fails, the upgrade task is suspended, and it is continued to execute the upgrade task after the terminal is automatically awakened; and S6, after the upgrading is successful, an upgrading result is fed back. According to the method and the device, the problem that upgrading needs to be started again when the vehicle-mounted terminal cannot be remotely awakened or upgrading fails due to other reasons in the prior art can be solved, so that the remote upgrading success rate is improved, and the user experience is improved.