One dimension approach for management has been resulted in many challenges in order to sustainable policy. Network governance and ultra-structure insight implication could remedy some of challenges of sustainable development. The aim of this paper is analysis of institutional network with co-management of Sorkheh Hesar National Park in Tehran province. Quantitative approaches are used for this research and all relevant institutions of co-management have been included. Based on results of this research, institutional cohesion is 41 percent (medium) and sustainability of institutional network is about 48 percent (medium) according to reciprocity index. The network centrality is medium based on output links that can be concluded politics must be focused on reducing centrality on decision making for sustainable management in Sorkheh Hesar National Park at regional level. Finally, this is concluded that network analysis is a successful tool that helps managers and planners to effective network governance. This is necessary to strength the institutional cohesion for natural resources policy making.