A driver upgrade method and a device are provided, to simplify a driver upgrade process and improve upgrade efficiency. The driver upgrade method includes: receiving, by a MANO, first information from a VNF during an upgrade of the VNF, the first information indicating version information of the VNF after the upgrade; determining, by the MANO, that an NFVI is not upgraded; and sending, by the MANO, second information to the VNF, the second information indicating to the VNF not to upgrade a VF driver installed in the VNF.