Abstract：
Square means large ground, especially means large ground in the city. It is the hinge of the roads of the city, and it is the space where people conducting activities about politics, economics, and culture. It is usually the space that large amount of people and vehicle get together. The arrangement of important architectures in or around the square usually can reflect the artistic and characteristic of the city. The squares are not so many in the city and occupy not large area, but their usage and position are important. It is one of the most important aspects of the city layout programming.
Square culture reflects architecture, culture, people and activities. Meanwhile, it reflects the fact that people want to get close to the nature. However, there is a landscape need for squares. Wateriness of the ground cannot be called a square, so square needs a central point, whatever its figure likes.
