A method for selecting resources in a carrier, characterized by comprising: determining, according to a service requirement for a service to be sent, available resources meeting the service requirement in a carrier supporting the service to be sent, and forming a resource pool from the available resources; selecting target resources for sending the service to be sent from the resource pool; wherein the selecting target resources for sending the service to be sent from the resource pool comprises: determining candidate resources that are not occupied by other services in the resource pool; and taking the candidate resources as the target resources for sending the service to be sent when a proportion of the candidate resources in the resource pool is greater than or equal to a preset value; wherein the determining candidate resources that are not occupied by other services in the resource pool comprises: determining candidate resources in the resource pool, wherein the candidate resources comprise resources that are not indicated by control information Sidelink Assignment, SA, to be occupied and receive receipt signal power of a Physical Sidelink Share Channel, PSSCH, less than a receipt signal power threshold of the PSSCH configured for a carrier where the candidate resources are located. determining, according to a service requirement for a service to be sent, available resources meeting the service requirement in a carrier supporting the service to be sent, and forming a resource pool from the available resources; selecting target resources for sending the service to be sent from the resource pool; wherein the selecting target resources for sending the service to be sent from the resource pool comprises: determining candidate resources that are not occupied by other services in the resource pool; and taking the candidate resources as the target resources for sending the service to be sent when a proportion of the candidate resources in the resource pool is greater than or equal to a preset value; wherein the determining candidate resources that are not occupied by other services in the resource pool comprises: determining candidate resources in the resource pool, wherein the candidate resources comprise resources that are not indicated by control information Sidelink Assignment, SA, to be occupied and receive receipt signal power of a Physical Sidelink Share Channel, PSSCH, less than a receipt signal power threshold of the PSSCH configured for a carrier where the candidate resources are located. determining candidate resources that are not occupied by other services in the resource pool; and taking the candidate resources as the target resources for sending the service to be sent when a proportion of the candidate resources in the resource pool is greater than or equal to a preset value; wherein the determining candidate resources that are not occupied by other services in the resource pool comprises: determining candidate resources in the resource pool, wherein the candidate resources comprise resources that are not indicated by control information Sidelink Assignment, SA, to be occupied and receive receipt signal power of a Physical Sidelink Share Channel, PSSCH, less than a receipt signal power threshold of the PSSCH configured for a carrier where the candidate resources are located.