A user equipment for alleviating barred access while reselecting from a first cell to a second cell in a mobile communication system is provided. A wireless module detects receives system information broadcasted in the first cell. A storage unit stores the system information. A controller reselects from the first cell to the second cell, determines whether a first barred access timer is running, and stops the first barred access timer and informs the upper layer of an RRC protocol that the access of the first service is allowed in response of that the first barred access timer is running.