In this paper, we analyze and classify the spatial structures of 43 historic towns in Boso(Chiba) based on the theory of "Qing Wu Jing", and then shaw that about 90% of their spatial structures can be interpreted by Feng-Shui. In other words, it means that the five elements of geographical environment of the region is keyed to select a settlement site. The result is that Feng-Shui will have to be reestimated and its idea as a method in site planning is coniderably a reasonable theory even in the present time.
