Abstract: With the constant development of the society, the requirements for the quality of urban life of people are higher and higher, and is regarded as the sitting room of the city ------This public space of the city of city square, is being adopted by most cities too, it has already become people and gone on in the public space of important city of the activity of viewing and admiring, associating, amusing, having a rest etc. So, it is practical that the design idea on the city square should be developed emphatically, the humanized space experienced, is regarded as the important component of the square at the same time, the ground on the square decorates and must afforest the plant the direction is developed constantly.
Key word: Piazza；Flooring；Afforest the plant；Humanization；
