A mobile communication terminal having a function of displaying a communication state and a method thereof are disclosed. The method of displaying a communication state in a case of a multiparty call using a mobile communication terminal having a plurality of display units includes displaying information on one calling party on a first display unit, and displaying information on the other calling party on a second display unit.Here, information on one calling party and information on another calling party can be switched with each other and displayed on the different display units, and therefore voice communication is possible between one or more of the parties at the same time.