This research offers insights into the spatial composition of traditional commercial streets through a deep investigation from the point of view of pedestrians. First, we conducted typological studies among all the streets based on data from field investigations. Then, we selected typical spaces according to the classification results to clarify their dynamic relations with the social activities and physical environment. Furthermore, this research illuminated potential issues implicated in the forms of spaces with consideration to the needs of pedestrians. Based on these findings, we offer adaptable urban design guidelines to support the sustainable regeneration of the traditional commercial urban streets.