Display apparatus and information display method thereof

A display apparatus and an information display method thereof are provided to withdraw/display channel list information and information of checking whether a data signal corresponding to the channel list information is contained to check whether data service corresponding to each channel exists, and to ask a broadcasting station for the needed data service easily. A display apparatus(1) comprises a receiving part(10), an image processing part(20), a display part(30), and a control part(40). The receiving part receives an image signal including assistant information. The image processing part carries out the image processing for the received image signal. The control part controls the image processing part to withdraw channel list information and information of checking whether a data signal corresponding to the channel list information is contained and displays the withdrawn information on the display part. The channel list information includes program guide information. The channel list information is received through the channel.