Data filtering method and device

The invention provides a data filtering method and device, the method is applied to a filtering system, the filtering system comprises m cells, each cell comprises b storage slots, each storage slot comprises a first domain and a second domain, the first domain is used for recording fingerprint information of element fingerprints of data elements, and the second domain is used for recording fingerprint information of element fingerprints of the data elements. The second domain is used for matching and recording an identification identifier corresponding to the fingerprint information stored in the first domain, and the data filtering method comprises the following steps: in response to an obtained target instruction, determining an element fingerprint of a to-be-processed data element; and performing target operation on the data elements at least based on the element fingerprints and the storage information of the first domain and the second domain in each storage slot, wherein the target operation at least c