Grid management as a new type of urban social management model of society has standard, clear, efficient, innovative, integrated, unified and other advantages. Some parts of the city in China, on the basis of grid management general theory, explored a new path to strengthen the basic judicial administrative work. In this article, we use the model of grid management, which is three forensic work platforms, five legal affairs work team, three works mechanism and "four into" grid, to establish a new "legal grid project." Obviously, the application above can effectively enhance the ability and level of city administration on justice to serve the masses in China.