The present invention provides a method for downlink channel reception by a terminal in a wireless communication system and a device therefor. Specifically, a method for downlink channel reception by a terminal in a wireless communication system may comprise the steps of: receiving, from a base station, beam configuration information relating to a plurality of transmission beams of the base station; receiving, from the base station, beam indication information indicating one or more transmission beams among the plurality of transmission beams of the base station; and receiving a downlink control channel through a specific transmission beam among the one or more transmission beams, on the basis of the received beam configuration information and the received beam indication information.