Method, device and system of bibliography repeat removal

The invention provides a method, a device and a system of bibliography repeat removal. The method includes obtaining the bibliography information of a plurality of reference bibliographies; for every reference bibliography, comparing the bibliography information of a bibliography to be retrieved with the bibliography information of the reference bibliography to obtain the similarity between the bibliography and the reference bibliography; and setting the reference bibliographies with the similarity less than or equal to a first threshold value as non-repetitive bibliographies. The method of the bibliography repeat removal compares the bibliography information of the bibliography to be retrieved with the bibliography information of the reference bibliographies after obtaining the bibliography information of the plurality of the reference bibliographies to obtain the similarity between the bibliography and the reference bibliographies and sets the reference bibliographies with the similarity less than or equal