As cities continue to regenerate and develop, the concept of sustainable development has gradually become one of the main themes in the process. People have also begun to place higher demands on the walkability of historic and cultural districts. Relevant research has also evolved from subjective and emotional evaluations to objective and rational quantitative analyses. Nowadays, with the support of information technology in development, various refined quantitative research tools and relevant urban evaluation data have created a fundamental analysis platform to quantitatively evaluate the walkability of historic and cultural streets. In this context, this paper attempts to sort out and develop a quantitative evaluation system for historic and cultural districts based on the concept of data augmented design, and thus develops corresponding optimized design strategies to further improve the walkability of historic and cultural districts.