The invention discloses a diversified configuration information compressing method and device.The method comprises the steps that a cryptographic algorithm is planned, and a data flow diagram corresponding to the cryptographic algorithm is generated; a common factor is extracted according to the repetition characteristic of the data flow diagram, and the common factor redundancy rate of the common factor is determined; sub-diagram partitioning is performed on the data flow diagram according to the hardware characteristic of a reconfigurable password processor and the common factor redundancy rate; a configuration compressing mode is determined according to structural characteristic information of partitioned sub-diagrams and interconnection characteristic information, and compressing configuration is performed on configuration information of reconfigurable arithmetic units corresponding to the sub-diagrams and interconnected configuration information through the configuration compressing mode.According to the method, the configuration information compressing mode is selected by combining the calculation characteristic of the cryptographic algorithm, the configuration information is compressed on the basis of the selected configuration information compressing mode to remove the redundant configuration information, and then the execution efficiency of the configurable password processor can be improved.