In this research, we have aimed to clarify the effects and the subjects of mix enforcement of the the land readjustment project and the urban redevelopment project as a technique of an urban update. As a results are follows, after law revision, many apart replotting became possible by mix enforcement. It is easily to facilitate consensus-building efforts among right holder. However, the land and building of nonparticipant did not make effective use. Moreover, because of technical complexity, foster aid personnel with the expertise for promotion of two projects in an integrated manner.
