Abstract
The purpose of this paper is to trace a regional planning to its origin and clarify the philosophy of the planning in Japan. This is a case study of the regional planning in Okayama-Kurashiki district (as a precedent). The origin was the theory of living sphere by Hideaki Ishikawa (1893-1955). His planning conception is forming the organization and technique to carry the planning forward. Concerning the organization, Yukiharu Miki (1903-1964), the prefectural governor of Okayama, took over Ishikawa's conception, and exerted himself for municipal merger with the goal of assigning the regional leadership to the local government, but the effort was not rewarded. On the other hand, the image of Okayama described by Ishikawa has hardly materialized, because of no preparation for the institution that preserves urban texture.