Abstract: An electronic program guide (EPG) information providing method and an EPG information providing system are provided. In the EPG information providing system, a first transport stream including first EPG information is received via a channel selected from a plurality of channels, and the first EPG information is extracted from the received transport stream. The reception channel selected from the plurality of channels is automatically changed in response to a predetermined channel selection signal. A second transport stream which is input via each changed channel and includes second EPG information is received, and the second EPG information is extracted from the second transport stream and stored. A keyword is generated on the basis of received EPG information, and additional information is generated by searching for the keyword using a predetermined search server and transmitted to a viewer.