A mobile communication terminal and a method of restricting harmful information thereof are provided. The mobile communication terminal includes a data judgment module which judges whether to restrict digital content by comparing content information included in a packet of the digital content with viewing restriction information; and a control unit which controls whether to display the digital content in accordance with a result of the judgment of the data judgment module. The method includes receiving digital content that is transmitted in a unit of a packet; judging whether viewing of the digital content is permitted by comparing content information included in the packet with viewing restriction information; and preventing a display of the digital content if it is judged that the viewing of the digital content is not permitted.