A mobile communication terminal capable of receiving Digital Multimedia Broadcasting, DMB, comprising: a DMB module suitable for receiving and outputting DMB; a mobile communication terminal module suitable for providing other functions of the mobile communication terminal; an external broadcasting output unit suitable for outputting DMB received through the DMB module to the external audio/video device; a user interface unit suitable for providing operations of the mobile communication terminal module and the DMB module and for receiving an input from the user; and a controller suitable for designating the mobile communication terminal module as a module for inputting an operating signal from and outputting the operating signal to the user interface unit if the controller senses a switching command signal for switching the module for inputting an operating signal from and outputting the operating signal to the user interface unit to the mobile communication terminal module through the user interface unit while DMB is output to the external audio/video device through the external broadcasting output unit, wherein the user interface unit includes an audio output unit, a display unit and a key input unit, characterised by if the switching command signal for switching the module for inputting an operating signal from and outputting the operating signal to the user interface unit to the mobile communication terminal module is sensed, the controller outputs the key input signal generated by the key input unit to the mobile communication terminal module and outputs video signals or audio signals generated by the mobile communication terminal module to the display unit and the audio output unit, wherein if the switching command signal for switching the module for inputting an operating signal from and outputting the operating signal to the user interface unit to the DMB module is sensed, the controller outputs a key input signal generated by the key input unit to the DMB module and outputs video signals or audio signals generated by the DMB module to the display unit and the audio output unit. a DMB module suitable for receiving and outputting DMB; a mobile communication terminal module suitable for providing other functions of the mobile communication terminal; an external broadcasting output unit suitable for outputting DMB received through the DMB module to the external audio/video device; a user interface unit suitable for providing operations of the mobile communication terminal module and the DMB module and for receiving an input from the user; and a controller suitable for designating the mobile communication terminal module as a module for inputting an operating signal from and outputting the operating signal to the user interface unit if the controller senses a switching command signal for switching the module for inputting an operating signal from and outputting the operating signal to the user interface unit to the mobile communication terminal module through the user interface unit while DMB is output to the external audio/video device through the external broadcasting output unit, wherein the user interface unit includes an audio output unit, a display unit and a key input unit, characterised by if the switching command signal for switching the module for inputting an operating signal from and outputting the operating signal to the user interface unit to the mobile communication terminal module is sensed, the controller outputs the key input signal generated by the key input unit to the mobile communication terminal module and outputs video signals or audio signals generated by the mobile communication terminal module to the display unit and the audio output unit, wherein if the switching command signal for switching the module for inputting an operating signal from and outputting the operating signal to the user interface unit to the DMB module is sensed, the controller outputs a key input signal generated by the key input unit to the DMB module and outputs video signals or audio signals generated by the DMB module to the display unit and the audio output unit.