This application provides a radio resource determining method and apparatus. The method includes: selecting, by a terminal from candidate resources, a radio resource used for a proximity-based service; and sending report information to a first service server, where the report information is used to report that the terminal is to perform the proximity-based service by using the radio resource, and the first service server is a service server in a home network of the terminal. According to embodiments of the present invention, the terminal selects the radio resource used for performing the proximity-based service, so as to avoid a time loss caused by allocation of the radio resource to the terminal by a base station, thereby improving efficiency of performing the proximity-based service by the terminal.