The construction of "with green" ecological library is a green construction and sustainable development building. The ecological library is to apply the ecological concept into the architectural design of the library, integrate the natural environment around Erfei Mountain, rationally optimize the planning layout, and fill in the local cultural symbols. It combines the interconnection of nature, human nature, history, ecology and other factors to form a harmonious and organic whole, to achieve the balance between the demand and return of natural resources, and to become the benchmark of urban green construction.