The present disclosure provides a method and a device in nodes for wireless communication. A first node receives first control information, the first control information being used for indicating a first radio resource group, and the first control information being used for indicating a first priority; chooses a target radio resource from a target resource pool; and transmits a first radio signal in the target radio resource; the first radio signal corresponds to a second priority; if the second priority is lower than the first priority, the target resource pool is orthogonal with the first radio resource group; if the second priority is higher than the first priority, the target resource pool overlaps with the first radio resource group. The method disclosure allows part of reserved resources to be released temporarily to meet abrupt business requirements, so as to achieve timely transmission of aperiodic and emergent business data.