The embodiment of the invention discloses a mobile management method and a mobile terminal thereof, relating to the field of wireless communication and aiming at solving the mobile management problem that a high-edition mobile terminal cannot move from a currently accessed network to the network supported by the mobile terminal but not supported by the currently accessed network. The method includes the steps of searching the frequency of the network supported by the mobile terminal but not existing in the list of an adjacent plot if the currently accessed network adopts an edition before Release 8 or under other conditions, searching the plot of the network according to the searched frequency and measuring the searched plot, and confirming whether to move to the plot according to the measuring result. The mobile terminal includes a searching unit, a measuring unit and a mobile unit. The invention is applicable for the mobile terminal to move from the network served currently to the network supported by the mobile terminal but not existing in the list of the adjacent plot.