The invention provides a method for processing data and a device therefor, and relates to the field of a data base; the method comprises: corresponding relationship is set up between at least one first data in a first data base and at least one second data in a second data base; according to the corresponding relationship, a first value of the first data in the first data base is acquired; according to the corresponding relationship, a second value of the second data in the second data base is acquired; the first and the second value are compared with each other, so that the comparison resultis generated. The method can improve the accuracy of verification of the data base.