Embodiments of the present invention provide a mobility management method and a device, where the mobility management method of a single radio controller includes: receiving a paging message for a UE sent by at least one first network device, where the paging message carries a user identifier used for indicating the UE; determining a paging management context of the UE according to the user identifier, where the paging management context of the UE records network standard information; and determining a paging range according to the paging message and the paging management context of the UE, and initiating paging on the UE in a cell in the paging range. The mobility management method and the device provided in the embodiments of the present invention implement optimization on a paging process and improve a mobility management effect.