This study clarifies the first plan of post-war reconstruction city plan, which has not known its detail yet, and its planning process by investigation for 4 local cities, Kumamoto, Kochi, Okayama and Gifu. As results, the followings are summarized. 1. Residential district control and building removal during war time influenced post-war main streets plan strongly, 2. Residents and land owners requested as early permission for building own houses and shops as possible and local governments had started planning earnest in fall 1945, 3. In municipalities with strong leadership like a enlightening governor, a planning process advanced faster, 4. In each planning process, there was each ardent argument for future city conception, 5. As for new planning tool and technique every city almost acceded to central government's fundamental guideline.
