Abstract: From the perspective of spatial-behavioral relevance, this paper takes the Northwest Corner Hui Nationality Community Street of Tianjin as the research object, and conducts a filed survey through behavioral annotation, questionnaire, and interview. With the data analysis, the paper identifies the characteristics of spatial composition of the community street. It examines the relations of various behaviors and spatial elements, crowd behaviors and spatial types based on the data of behavioral investigation in typical space chosen for the examination, and proposes the principles of micro-renewal of community streets. Based on this, it promotes the optimization strategy from the aspects of "reservation" and " reformation", and discusses a participatory updating model, which provides reference and basis for urban renewal.