Information mechanism not only has the attribute of state governance system, but also belongs to the category of state governance capacity. Information mechanism is not only a kind of institutional arrangement of information management, but also the embodiment of the government's information capacity and resource. The paper conceptualizes the four element analysis framework (IIOI) of ideas, institutional arrangement, organizations and information tools. It puts forward the four paths of modernization of information mechanism that are developing the idea of open and scientific governance information management; system arrangement matching information, resources and disposal rights; building a professional and informed policy community; and enhancing the public goods attribute of information tools. Especially, these four elements should be used comprehensively and interactively, that is main path to improve the state governance of information mechanism.