Beijing Olympic Forest Park is a representative of green city practice. Its landscape performance is to quantitative the relationship among the social, economic, and environmental benefits. Based on the existing construction and operation geographic information data of Beijing Olympic Forest Park, Research investigated and analyzed the user behavior in the Olympic Forest Park through investigation and observation on the spot. With the motivation, behavior, emotion , and cognition of park users as the core content, the research explores the behavioral characteristics and spatial relationships in the Olympic Forest Park, evaluates the social benefits of the landscape performance of green city development, and analyses the user satisfaction, activity types, feelings , and emotional improvement, to content and explore its potential regular pattern. As an effective complement to the landscape performance of the Olympic Forest Park, the research tries to provide a more systematic, rigorous , and quantifiable method for the case study of the landscape social performance of green cities.