The reconstruction of historic district is a hot topic in urban design in recent years. Weighing the interests of all parties, improving the space quality and meeting the use needs has become a century problem. In this paper, the Deshengqiao historic block is taken as an example to investigate by observing and recording the form of the inside and outside of the street and the edge space, people's behavior state, so that we can explore the use and future development of the edge space. According to the demand of the Deshengqiao residents who “want people to come in”, this paper puts forward a solution to present the Deshengqiao bolck’s most characteristic and life-rich articles and buildings in an artistic form, so as to create an attractive Street entrance and a comfortable communication place and spiritual space, enhancing the image of the city and giving play to the functions of edge spaces.