Based on old trees ridge residential public space transformation, this paper analyzed the application of PSPL （Public Space ＆ Public Life Survey） on the transformation of public activities in the old residential area by using PSPL analysis method. With the combination of qualitative and quantitative analysis, the result grasped the public ac- tivities in the old residential public space and behavior characteristics, providing the basis for the design of public space and reconstruction. Thus, a hi...
