The 18th CPC (The Eighteenth National Congress of the Communist Party of China) has improved China’s reform into a new stage,especially proposed to deepen the reform at the Third Plenary Session of the 18th CPC Central Committee and made a big decision of rule of law at the Forth Plenary Session. As a result,the governance system and the operation mechanism of the whole country and society are undergoing profoundly changed. Under such a big background,the transformation of archival public service become an important part of archival work reform in a period of current and future. In order to realize the transformation of archival public service,archivists should set up new concepts of archival public service and reform the operation mechanism and service mode of archives work.