Method and device for incremental backup of data assets

The invention discloses a method and a device for incremental backup of data assets, which can solve the technical problem that the data assets are difficult to quickly position and restore when a main server is switched to a backup server. The method comprises the following steps: acquiring a change sequence of data assets; the backup server obtains the use frequency of each data asset in the changed data assets based on the change sequence of the data assets, and determines hotspot data assets from the changed data assets based on the use frequency; acquiring associated data assets of the hotspot data assets; generating complete data of the hotspot data assets and associated data assets of the hotspot data assets, and storing the generated complete data in a fixed area of the backup server; a multi-way tree and a plurality of linked list structures are arranged in an area outside the fixed area of the backup server, and each linked list corresponds to one data asset; the multi-way tree is used for storing c