The present disclosure provides a resource authorization method for deployment of a VNF, a VNFM, an NFVO, a storage medium and a device. The resource authorization method includes steps of: determining, by the VNFM, whether or not there is a resource request; in the case that there is the resource request, transmitting, by the VNFM, a resource authorization request to the NFVO; receiving, by the VNFM, a resource authorization response from the NFVO, the resource authorization response containing a resource authorization result; and processing, by the VNFM, the resource authorization result.