Given the current dearth of street space design that adequately addresses the needs of the elderly, we must understand their needs to cope with an aging society. To make streets more useful and satisfying for the elderly, we propose methods that consider visual continuity, safety, and richness. Introduce psychophysics theory into urban design. Use inductive analysis to sort out elderly-related psychological indicators. Curve-fit psychological perception values with corresponding street space characteristics to explore single-factor influence laws. Findings reveal that the psychological perception of the elderly has a connection with the quality of the street. Among them, the lighting ratio and perceived value of lighting are linearly related; the relationship between the proportion of intersections, the degree of segregation; the proportion of sidewalks, the proportion of sidewalk occupancy, the openness of the sky, and the proportion of seating and the perceived value of street space for the eld is logarithmic, which aligns with the law of Fichtner. This lays a solid foundation for subsequent research into the elderly’s psychological perceptions regarding the quality of street space.