The present application relates on a resource selection method and apparatus, an electronic device and a storage medium, where if the maximum number of DMRS ports corresponding to a PSSCH is at least two, the UE compares an RSRP of a channel with a preset received power threshold, and determines whether to perform resource exclusion in a resource selection window of the UE according to a comparison result, thereby determining an implementation method where comparison with SL-RSRP is performed according to measured RSRP values of two or more DMRS ports when the PSSCH is two-layer transmission, and it is also possible to compare a measured RSRP value of a DMRS port with the SL-RSRP for resource selection when the PSSCH is two-layer transmission, so that the resource selection method can be applied in a variety of scenarios.