1. A web service-enabling digital video/audio-processing apparatus, comprising: a first communication module which receives a web service address from an external device to perform a function; a web service engine which checks whether a file contained in the web service address exists in a function list, and outputs the web service address if the file exists; a first engine unit which parses the web service address output by the web service engine and generates a web language corresponding to the function; a function setting unit which sets the function based on the web language; and a control unit which performs the set function.