This application provides a communication method and apparatus. In the method, a terminal may obtain a main resource pool used to transmit sidelink data and a supplementary resource pool used to transmit the sidelink data. The terminal may request, based on a requirement of the terminal, a resource in the main resource pool or a resource in the supplementary resource pool to transmit the sidelink data. For example, when the resource in the main resource pool cannot meet a data transmission requirement of a large quantity of V2X (vehicle-to-everything) services, the terminal may request the resource in the supplementary resource pool to transmit the sidelink data.