Abstract
In Hiroshima which suffered war-damage of the destruction by an atomic bomb, many planning ideas have been developed through the reconstruction planning. This paper intends to study the character and the population of city among those planning ideas. The contents are as follows : 1) purpose of the studies, 2) how to grasp planning ideas and method of the studies, 3) planning process of the reconstruction planning for war-damaged area and the outline of the plan, 4) planning ideas of the character and the population of city, 5) instead of conclusion. As the results, this study makes clear the planning idea of industrial city, that of complexed function city, that of transfering the city, that of small city and etc., which have been developed in Hiroshima.