The purpose of this paper is to clarify the urban forming process in the modern silk raising area from the two aspect. The first is the action of wealthy people and second is the urban space, through the analysis of the modernizing process in Honjo-machi. The results are the followings 1) In Honjo-machi, it mordernized rapidly with the change of silk raising system 2) The action of wealthy people kept pace with flow of modernization, and contributed to form the social system 3) And thier action largely affected to industrialization, Finally, the space structure was affected by the silk mill.