This paper introduces studies on Japanese Landscape and environmental design work by author. Japanese people have venerated nature from the far ancient times and led life in unison with nature. This paper describes about the characteristics of Japanese architecture, the characteristics of Japanese civilization, and influence on "Japonism" from the viewpoint of the author as a design researcher and a designer. It is said the environmental design is the ideal method based on Japanese civilization. The author considers environmental design as a figurative method which is created with the sensitivity brewed in the climate of Japan and which is invented from various interrelations, and he shows his own environmental design to replace the conclusion.