If the person in charge of finance in your company changes, you can log in to the E-Taxation Bureau through "Enterprise Login", click the module I want to do tax-comprehensive information report-identity information report-change tax registration in turn, add the change items under the column of "Application Form", and submit the application according to the steps listed by the E-Taxation Bureau. Tips: When the electronic tax bureau changes the financial controller, the name, type, number and mobile phone of the financial controller must be changed at the same time. If the person in charge of finance does not have a real name, you can change the mobile phone number in the "Change Tax Registration" function; If the real name of the person in charge of finance is used, the mobile phone number can only be changed in personal information maintenance (path: "natural person login" to log in to the electronic tax bureau, and click My Information-User Management-Personal Information Maintenance).