The present application discloses a method for a terminal reporting channel state information to a base station in a wireless communication system. Specifically, the method comprises the steps of: receiving, from a base station, a plurality of first reference signals corresponding to a row or a column of a transmission antenna array, and a second reference signal for measuring cross polarization characteristics; calculating first precoders of each of the plurality of first reference signals, and connection coefficient information between the first precoders; generating cross polarization characteristics information by using the second reference signal; and reporting, to the base station, channel state information comprising the first precoders, the connection coefficient information, and the cross polarization characteristics information.