An indicator system of regional landscape patterns at the path and landscape scales was proposed by the principles of landscape ecology.The pumped storage station of hydropow er develo pment plan was taken as an example to show the impacts on regio nal landscape with the RS and GIS interpretation. Results showed that vegetation composition in the study area was simple, which was largely forest land. The landscape heterogeneity was low and the ability of ant-i interference was weak. This circumstance was worse when the design was put into practice. Moreover, the grey relation analysis indicates a goo d consistency with landscape pattern indexes and actual situation and it is a better way to assess the impacts of ecological environment.