A method for backing up and recovering a license to solve the problem in the prior art that an original license is sent to a user when the license is recovered by a server which results in a right extension includes: backing up the license information of the first device in the server, and associating the license information of the first device with a user identifier, and the license information indicating the usage status of the license when the first device is reported recently; requesting the license recovered from the second device to the server; validating the user identifier of the second device with that associated with the license information, and sending the license created according to the backed up license information when the two identifiers are insured to be consistent with each other.<img id="iaf01" file="imgaf001.tif" wi="78" he="96" img-content="drawing" img-format="tif" />