A method of relaxing frequency measurement by a terminal in a wireless communication system is provided. The method includes receiving, from a base station, system information comprising first configuration information associated with frequency measurement and second configuration information associated with relaxed frequency measurement, the second configuration information comprising at least one of first information associated with a criterion for the terminal with low mobility (low mobility criterion) or second information associated with a criterion for the terminal not at cell edge (not at cell edge criterion), identifying whether at least one of the low mobility criterion or the not at cell edge criterion is fulfilled, and determining whether to perform frequency measurement based on the identifying.