An NF information interaction method and device. The method comprises: a network function library NRF receiving a service discovery request sent by an NF requesting party, wherein the service discovery request at least comprises a service identifier requested to be provided by the NF requesting party; performing querying according to the service identifier, and determining an NF providing party of a service requested to be provided by the NF requesting party and service-related information about the NF providing party; and sending the service-related information about the NF providing party and the service-related information to the NF requesting party by means of a service discovery response.