Embodiments of this application disclose a transmission processing method and apparatus, a device, and a storage medium. The method is applied to a first device, and includes: receiving a pre-scheduling message that is transmitted by a second device through a first channel; reading, from the pre-scheduling message, a pre-scheduling moment and a pre-scheduling frequency band that are used for pre-scheduling transmission between the first device and the second device; and transmitting, before the pre-scheduling moment is reached, uplink target data and indication information to the second device by using any band other than the pre-scheduling band, the indication information being used for indicating cancellation of the pre-scheduling transmission.