Disclosed are a method whereby a terminal measures radio resource management (RRM) in a wireless communication system, in which multiple analogue beams are applied, and devices for supporting same. Disclosed more particularly are: a method whereby a terminal measures RRM according to at least one RRM measurement method of a short-term (ST) RRM measurement method for measuring an instantaneous channel state for each analogue beam and a long-term (LT) RRM measurement method for measuring an average channel state for multiple analogue beams; and devices for supporting same.