The invention discloses a method for updating web TV and managing software version thereof, which comprises the following steps of: carrying out modularized management on system software and application software, wherein a software module mainly comprises the following parts of a bootstrapper, Kernel, a file system Rootfs, Mmnet and a TV, and a network upgrading process mainly comprises the sectional substitute upgrade specific to the modules of embedded linux; connecting the TV and a network, completing the upgrade of the network TV by using network functions; and implanting network upgrades mainly including the processes of upgrade package version control, upgrade package manufacture and upgrade flow. The invention carries out the modularized management on the system software and the application software by using the thought of software functional modularization, thereby decreasing the direct coupling property among software modules and reducing difficulty in product maintenance. In addition, by utilizing the network functions to carry out network upgrade conveniently and rapidly, the cost on product maintenance in a later period is reduced.