Influential Factors of Reasonable Size of City Square and Its Planning Strategy

For reasonable size of city square,we should consider: necessary content,meaning and the threshold point at which the compre-hensive benefits begin to lower as the size of the square is enlarged. From aspects in sense of space,ecolological benefits,per person landarea,etc.,the paper analyzes the maximum and minimum area of square and proposes that the size can be controlled through planning andpolicy.[