File desensitization method and device

The invention aims to provide a file desensitization method and device, and the method comprises the steps: presetting at least one sensitive type and a corresponding desensitization strategy; analyzing the to-be-desensitized file to obtain at least one piece of target sensitive information corresponding to the to-be-desensitized file; determining a target desensitization strategy corresponding to a target sensitive type to which the target sensitive information belongs according to the sensitive type and the corresponding desensitization strategy; and according to each target desensitization strategy, desensitizing the corresponding target sensitive information in the to-be-desensitized file to obtain a desensitized file, so that the sensitive information in the to-be-desensitized file is directly scanned and analyzed, and desensitizing the sensitive information obtained through analysis according to the desensitization strategy corresponding to the sensitive type to which the sensitive information belongs,