A method for processing access point name restriction information, comprising: receiving, by a second mobility management element, first access point name restriction information sent by a first mobility management element; and obtaining, by the second mobility management element, maximum access point name restriction information according to the first access point name restriction information; wherein the step of obtaining, by the second mobility management element, the maximum access point name restriction information according to the first access point name restriction information comprises: obtaining, by the second mobility management element, the maximum access point name restriction information directly from the first access point name restriction information; and receiving, by the second mobility management element, second access point name restriction information sent by a serving gateway; comparing, by the second mobility management element, the first access point name restriction information and the second access point name restriction information to check whether they are the same; and if the first access point name restriction information and the second access point name restriction information are not the same: ignoring, by the second mobility management element, the maximum access point name restriction information obtained according to the first access point name restriction information; and storing, by the second mobility management element, the second access point name restriction information; and obtaining, by the second mobility management element, a maximum APN restriction value according to the second access point name restriction information; wherein the second mobility management element is a mobility management entity, MME, and the first mobility management element is an MME. receiving, by a second mobility management element, first access point name restriction information sent by a first mobility management element; and obtaining, by the second mobility management element, maximum access point name restriction information according to the first access point name restriction information; wherein the step of obtaining, by the second mobility management element, the maximum access point name restriction information according to the first access point name restriction information comprises: obtaining, by the second mobility management element, the maximum access point name restriction information directly from the first access point name restriction information; and receiving, by the second mobility management element, second access point name restriction information sent by a serving gateway; comparing, by the second mobility management element, the first access point name restriction information and the second access point name restriction information to check whether they are the same; and if the first access point name restriction information and the second access point name restriction information are not the same: ignoring, by the second mobility management element, the maximum access point name restriction information obtained according to the first access point name restriction information; and storing, by the second mobility management element, the second access point name restriction information; and ignoring, by the second mobility management element, the maximum access point name restriction information obtained according to the first access point name restriction information; and storing, by the second mobility management element, the second access point name restriction information; and obtaining, by the second mobility management element, a maximum APN restriction value according to the second access point name restriction information; wherein the second mobility management element is a mobility management entity, MME, and the first mobility management element is an MME.