A method for a network device to process a third-party call can be applied in a scenario where a third party originates a call when a called terminal is in a call process. The network device extracts a calling phone number of the third party and notifies the calling phone number to the called terminal. The called terminal has activated a call waiting service. The network device receives a processing suggestion on the third-party call returned by the called terminal and processes the third-party call according to the processing suggestion.