From the perspective of administrative management, the office is the core department of power, because it is responsible for financial power, financial power, logistics support and comprehensive affairs; From the perspective of salary and personnel management, the personnel department is the core department, because the adjustment and deployment of personnel by the party group are carried out through the personnel department; From the business point of view, tax management and tax collection and management are the core departments, because how to implement tax policies, the ways and means of tax collection and management of taxpayers, the right to examine and approve tax reduction and exemption, the purchase, use and even punishment of invoices are inseparable from these two departments. Of course, as a tax department, organizing income is the central task, and the power department related to taxpayers should be the tax administration and collection and management department.