Data processing method and device

The invention discloses a data processing method and device. The data processing method includes that detecting whether the i strip in a current chunk range conforms to a preset condition, wherein the preset condition refers to that the i strip is a complete strip, and moreover, the i strip conforms to a recovery condition, the complete strip refers to that all the pages of the strip need write-back, and i is a positive integer; when the i strip conforms to the preset condition, constructing all the pages of the i strip into bio, and sending to a disk array RAID. According to the data processing method, the write-back performance of the system can be effectively improved through processing the strip which conforms to the preset condition in advance, and moreover, the resource cost is greatly reduced.