The aim of this study is to examine the meaning of the collective participation and the communication in public art through Christo's public project. The works of Christo have been executed in public places and natural environment out from ‘the white cube', in that they are more a kind of projects in what the whole process is itself a part of art. His public projects use a peculiar method of wrapping. It raised the problem of the publicity of the place, and of the communication between the artist and the audiences/participants. Here the artist secured finances for himself and the wrappings were removed after a short periods. It was a new way of doing art, where the general public participated in and collaborated in a collective project. with this, the key concept of Christo's project, the expansion of participant, interactivity and collaboration that take place of the concept of artist as a private creator. In short, it is significant that the public art project of Christo not only changed the environment of the sites but extended the meaning of work of art into a social and public realm.