Since the mid-20th century,the world cities have evoluted and developed from industrial cities to modern creative ones.The key to the urban evolution and development lies in the tremendous changes in the urban spatial structure which are led by the changes of the urban industrial economy structure.The cultural industry cluster in the downtown of the international creative metropolitan cities changes the functions of the central area of the cities,and also changes the city spatial structure of a single center in the past and then to build a polycentric one.It results the changes in the population,land and employment density of those international creative metropolitan cities.