Abstract：With the improvement of economic level and urbanization, the construction of urban public space in China has entered
a new stage of development, and began to look for the possibility of developing the existing public space in the built
environment. Under this premise, it is necessary to fnd a more suitable method for the construction of public space in
the new era. Through the introduction of the concept of elastic control, this paper hopes to discuss the mechanism of
diferent elastic control tools on the three qualities of urban public space: walkability, identity and mixed-use through
the analysis of diferent cases, and summarize the advantages of elastic control of public space in the built environment.