Embodiments of this application relate to the field of communication technologies, and provide a user equipment UE capability information reporting method and a device. The method includes: UE receives UE capability enquiry information from a network device, where the UE capability enquiry information is used to query a capability of the UE. The UE sends UE capability information to the network device based on the UE capability enquiry information, where the UE capability information is used to indicate that the UE supports a first-type band combination, and the first-type band combination includes a band combination including an intra-band ENDC band combination and NRCA. The UE capability information includes first information and second information, the first information includes a first bandwidth combination set of the intra-band ENDC supported by the UE, and the second information includes a second bandwidth combination set of the NRCA supported by the UE.