Information sending and receiving methods are provided. The information sending method includes: determining, by a network device, configuration information of N downlink control channel regions, where the N downlink control channel regions include a first downlink control channel region, the configuration information of the N downlink control channel regions includes configuration information of the first downlink control channel region, and N is a positive integer; and sending, by the network device, the configuration information of the N downlink control channel regions to a terminal device, so that the terminal device determines the N downlink control channel regions based on the configuration information of the N downlink control channel regions.