Since the born of"Creative Cities Network", there have been design, literature, music, folk art, movies, media art, cooking food count up to seven classes and total of 31 cities to join the ranks.This paper introduces the basic principle, operation mechanism and multivariate culture characteristics of the "Creative Cities Network", and take Seoul and Berlin, the two capitals of design, to summarize and conclude the formation mechanism and effective practice of building creative cities, in order to enlightenment to newcomers. <<