The construction of countylevel convergenc media center is a national strategy to reconstruct the grassroots political communication system and promote the mediumlization of political governance.In terms of media logic，countylevel convergence media should reshape its own professional system based on institutional arrangements with professional ability，so as to gain the approval of county audience. In terms of cultural logic， the countylevel convergence media should give full play to its local advantages，comprehend the cultural traditions of the county， integrate the common sense of the county culture，mix up the county cultural community， and gather the people’s hearts with culture. In terms of political logic，countylevel convergence media should optimize grassroots political communication，resolve social crises，serve county governance，and strengthen political identity under the framework of governing the country. Only by integrating the media logic，cultural logic and political logic into the construction of countylevel convergence media center can media integration play a role as the institutional driving force of national strategy to the greatest extent，realize the toplevel design goal of “guiding and serving people”，and become a new media platform to premote the modernization of national governance system and national governance capacity.

countylevel convergence media; operation mechanism; media logic; cultural logic; politics logic