The invention relates to the field of communications, and especially relates to a downlink scheduling method and device. The method comprises the following steps: establishing a logical cell for all downlink cluster group calling services by a base station and allocating a first frequency domain resource for the logical cell; respectively scheduling all downlink cluster group calling services in the logical cell by the base station based on the first frequency domain resource, and obtaining resource allocation results respectively corresponding to all downlink cluster group calling services; and respectively transmitting downlink service data of all downlink cluster group calling services to a terminal by the base station according to the resource allocation results respectively corresponding to all downlink cluster group calling services by adopting a preset scrambling mode. Therefore, the interference problem of downlink scheduling is solved, and receiving gains are also brought to acluster terminal.