A method for a called terminal to process a third-party call, applied in a scenario where a third party originates a call when the called terminal is in a call process with a peer number, and comprising: receiving, by the called terminal, a calling phone number of the third party delivered by a network device, and determining a priority of the calling phone number of the third party and a priority of the peer number, wherein the called terminal has activated a call waiting service, and wherein the determining a priority of the calling phone number of the third party and a priority of the peer number comprises: storing phone numbers and priorities of the phone numbers in a phone book of the called terminal and searching the phone book of the called terminal to determine the priority of the calling phone number of the third party and the priority of the peer number; comparing the priority of the calling phone number of the third party with the priority of the peer number, determining a processing suggestion on the third-party call according to the comparison result, and sending the processing suggestion on the third-party call to the network device so that the network device processes the third-party call according to the processing suggestion on the third-party call, wherein the determining a processing suggestion according to the comparison result comprises: allowing access of the third-party call when the comparison result is that the priority of the calling phone number of the third party is higher than or equal to the priority of the peer number; or denying the access of the third-party call when the comparison result is that the priority of the calling phone number of the third party is lower than the priority of the peer number; and after the sending the processing suggestion on the third-party call to the network device, entering a third-party access mode if the called terminal receives a paging message delivered by the network device. receiving, by the called terminal, a calling phone number of the third party delivered by a network device, and determining a priority of the calling phone number of the third party and a priority of the peer number, wherein the called terminal has activated a call waiting service, and wherein the determining a priority of the calling phone number of the third party and a priority of the peer number comprises: storing phone numbers and priorities of the phone numbers in a phone book of the called terminal and searching the phone book of the called terminal to determine the priority of the calling phone number of the third party and the priority of the peer number; comparing the priority of the calling phone number of the third party with the priority of the peer number, determining a processing suggestion on the third-party call according to the comparison result, and sending the processing suggestion on the third-party call to the network device so that the network device processes the third-party call according to the processing suggestion on the third-party call, wherein the determining a processing suggestion according to the comparison result comprises: allowing access of the third-party call when the comparison result is that the priority of the calling phone number of the third party is higher than or equal to the priority of the peer number; or denying the access of the third-party call when the comparison result is that the priority of the calling phone number of the third party is lower than the priority of the peer number; and after the sending the processing suggestion on the third-party call to the network device, entering a third-party access mode if the called terminal receives a paging message delivered by the network device.