Abstract: The urban ecological environment has been more and more severely endangered along with the rapid development of urbanization in our country. In order to promote the sustainable development of cities, building the ecological network of urban greenspace and maintaining the stability of urban ecosystem have become the focuses of multidisciplinary research. Rivers are the core space structure of the urban greenspace ecological network, the open space is the foundation of the greenspace ecological network,and research on the relationship between the rivers and open space would be of great significance for the construction of urban greenspace ecological network. Taking Nanyang City as an example, the building approach of urban greenspace ecological network coupling the rivers with open space was put forward based on the coupling relationship between the rivers and open space and by integrating the analyses on the connotation, function mechanism and the evaluation index of urban greenspace ecological network.