Abstract
Tohgo Murano is one of the most important architects in modernization of Japan. Nissay Hibrya Building is his masterpiece by the expresslon with a free architectural style. The classicism appearance finished with the granite and the visionary interior space using a pearl oyster received criticism "it is reactionary" In the criticism announced in the past, Murano is said to have advanced the design by a method like a craftsman. By analysis of his architectural drawings, this research checks his design process along a progress chart, and clarifies that actual situation. It is a part of research which clarifies his design intension by verifying design process of Murano.