Abstract
This study analyzed existence or nonexistence of characteristic of modern city planning in Shikukaisei (Japanese Word for Urban Improvement before City Planning Act) and building regulations at Keijo (Seoul; at present) before Ordinance for Street Planning in Chosen had acted. The Urban Improvement of Keijo had not included anything else except street improvement either. In addition, the building regulations had an elementary zone system that had divided manufacturing industry from residential area, however, it had not been related to street planning. They had not been succeeded to by the Ordinance. This study concluded that the introduction time of modern city planning in Keijo had been after the Ordinance had enacted.
