Abstract
This paper discuss the relation between urban policy and scientists in the age of metropolis formation by focusing on the air defense policy in Tokyo, in terms of two points: (1)the historical context of associating architects with the air-defense policy and (2)the restructuring of urban solidarity based on town and craftsmanship by applying a new control system of architecture. Concludingly, the writer points out the importance of taking into consideration “urban environment policy” in urban studies.