The present application relates to the field of mobile communications. Disclosed are a search space configuration method and apparatus, and a device and a storage medium. The method comprises: receiving configuration signaling sent by a network device, wherein the configuration signaling is used to configure at least one first search space for a first cell to schedule a second cell across carriers, wherein the second cell is a self-scheduling cell; and detecting downlink control information in the at least one first search space. When the second cell supports self-scheduling, the second cell can also be scheduled by the first cell. Therefore, the manners of configuring a search space group of a cell are increased, and the cell scheduling manners are also increased, thereby improving the communication effect.