A method for selecting preference channels comprising the steps of initializing a digital TV(DTV) system to set an idle state of a general mode in which a channel is selected through multi-stage-input procedures; registering a preference channel set including at least one preference channel through which a user most-frequently watch DTV, the registered preference channels corresponding to specific keys, respectively; c) switching current general mode to a preference mode; and d) selecting one channel of the registered preference channel set through the one-touch input of the specific key corresponding to the one channel, in the switched preference mode.