A cell reselection method performed by a user equipment, UE, in a wireless communication system, the method comprising: receiving, by the UE from a network, information indicating to apply a lowest priority to a second frequency of a second cell by deprioritizing the second frequency to the lowest priority, wherein the information is received through a radio resource control, RRC, connection reject message, wherein a timer is used to indicate a period for which the second frequency is deprioritized to the lowest priority, wherein the timer is started upon receiving the RRC connection reject message, and the deprioritizing of the second frequency is stopped at an expiry of the timer; performing, by the UE, cell reselection by applying the lowest priority to the second frequency; camping on a target cell operated at a first frequency after performing cell reselection by constantly applying the lowest priority to the second frequency; detecting, by the UE, during the timer driving, an MBMS service on the second frequency, wherein the MBMS service is detected by system information transmitted from the second cell; applying, by the UE, an implicit priority to the second frequency to perform cell reselection in order to receive the MBMS service, wherein the implicit priority is the highest priority according to a cell detection of a predetermined type; and if the timer is stopped before the MBMS service is ceased and when the MBMS service is stopped, performing, by the UE, cell reselection by applying common priority as signaled from the network to the second frequency and the first frequency, wherein the common priority is a cell reselection priority provided through a broadcast signaling. receiving, by the UE from a network, information indicating to apply a lowest priority to a second frequency of a second cell by deprioritizing the second frequency to the lowest priority, wherein the information is received through a radio resource control, RRC, connection reject message, wherein a timer is used to indicate a period for which the second frequency is deprioritized to the lowest priority, wherein the timer is started upon receiving the RRC connection reject message, and the deprioritizing of the second frequency is stopped at an expiry of the timer; performing, by the UE, cell reselection by applying the lowest priority to the second frequency; camping on a target cell operated at a first frequency after performing cell reselection by constantly applying the lowest priority to the second frequency; detecting, by the UE, during the timer driving, an MBMS service on the second frequency, wherein the MBMS service is detected by system information transmitted from the second cell; applying, by the UE, an implicit priority to the second frequency to perform cell reselection in order to receive the MBMS service, wherein the implicit priority is the highest priority according to a cell detection of a predetermined type; and if the timer is stopped before the MBMS service is ceased and when the MBMS service is stopped, performing, by the UE, cell reselection by applying common priority as signaled from the network to the second frequency and the first frequency, wherein the common priority is a cell reselection priority provided through a broadcast signaling.