Thousands of years, the plaza is a genre of human civilization history. The plaza that the most important part of the city, was changing and developing constant dynamically with city transition. The passed half of century, China constructed a lot of emerging cities. These emerging cities constructed a lot of plazas for finding the solution of shortage public spaces. Changchun that one of the most important industrial city in China, constructions many plazas. Through this research, finding urban function and meaning of plaza will be useful in planning plaza to urban construction in future.