The design of large-scale machine system is a very complex problem. These design problems usually have a lot of design variables and constraints so that they are difficult to be solved rapidly and efficiently by using conventional methods. In this paper, a new multilevel design method oriented network environment is proposed, which maps the design problem of large-scale machine system into a hypergraph with degree of linking strength (DLS) between vertices. By decomposition of hypergraph, this method can divide the complex design problem into some small and simple subproblems that can be solved concurrently in a network.