Provided are a method and an apparatus for searching control information by a terminal. The method comprises the steps of: acquiring from a base station, by means of a physical downlink control channel (PDCCH) or an upper layer message, at least one type of information being from location information on a physical control format indication channel (E-PCFICH) or location information on an E-control region; receiving the E-PCFICH based on the E-PCFICH location information; acquiring size information on the E-control region by means of the E-PCFICH; and searching E-PDCCH in the E-control region.