Storage object backup method and device

The invention discloses a storage object backup method and device. The method comprises the steps that a storage object needing to be backed up is determined, and the storage object is an object of a preset storage service system; a file structure of the storage object is read through the mapping tool, the file structure comprises operation data in the storage object, and first formats of the operation data are in one-to-one correspondence with preset storage service systems; a minimum file structure mapping layer of the storage object is determined through the simulation interface according to the file structure, and the minimum file structure mapping layer comprises operation data of the minimum operation unit of the second format; the storage object is read through the minimum file structure mapping layer through a backup tool, the storage object is backed up, and the backup tool is used for backing up the object in the second format. According to the method and the device, the technical problem that the b