A method and a device allowing a terminal to receive a signal in a wireless communication system, according to one embodiment of the present invention, configure a search space set constructed in a hierarchical structure, and can monitor control channel candidates in the configured search space set. Particularly, when the hierarchical structure is constructed, a control channel candidate of a lower aggregation level (AL) in the search space set is randomly arranged on the basis of a control channel candidate of a top AL in the search space set, wherein a portion or the entire area of the control channel candidate of the lower AL can be arranged so as to overlap the control channel candidate of the top AL.