Rule file generation method, rule file application method, account data processing method and account data processing device

The invention provides a rule file generation method, an application method and an account data processing method and device.The generation method comprises the steps that a white list is defined, and the white list is used for determining whether account data is output in a plaintext mode or output after desensitization; each rule entry of the white list defines a rule entry name, an account range initial value, an account range end value and an account length; defining an output mode of the account data according to the attribute values of the sub-elements, wherein the output mode comprises plaintext output, output after desensitization and encrypted output; the white list is defined to at least comprise one encryption rule; the defined rule content is written into a template file, the rule file is generated, and the template file is a formatted file in which the rule content is not written. According to the invention, the definition authority of the grading processing rule is endowed to the business side t