| Landscape Architectural Psychology, based on Environmental Psychology, is used for researching the process of landscape design, building, and evaluation after use. At the same time, it relates to the mind and behavior of people in the environment.Through summing up seriously, as well as taking some examples, the paper analyzes, after studying General Psychology and Environmental Psychology, a lot of uses' mind and behavior in landscape architecture's environment, which seemed very common. Then it organize the results together systematically to try to form the application system just for landscape architecture. At last, it advises to found the process of landscape design and evaluation system (RDE 3 steps) based on Landscape Psychology. Hereby, it provides the deeper authority of psychology and praxiology for subject theory's establishing and perfection of landscape architecture. |