The present invention includes comparing a content rating value set on a received broadcast content to a reference rating value set on the mobile terminal, if the content rating value meets the reference rating value as a result of the comparing step, displaying the broadcast content, receiving an input of a viewing restriction command signal in the course of displaying the broadcast content, if the viewing restriction command signal is inputted, adjusting at least one of a plurality of field values configuring the reference rating value to prevent the content rating value from meeting the reference rating value, and if the content rating value fails to meet the reference rating value as a result of the adjusting step, stopping a display of the first broadcast content.