At present, 12366 Beijing center is mainly responsible for answering national tax policy questions and Beijing national tax and local tax policy questions, monitoring and managing the quality of the national tax service hotline, guiding and managing the provincial 12366 center, operating and maintaining the tax service knowledge base of the central and Beijing 12366 tax service hotlines, answering the tax consultation column of State Taxation Administration of The People's Republic of China extranet website, accepting and supervising complaints and reporting, and undertaking.