An urban park is a place for the urban elderly to have daily recreation. With the aging of the population in China, the daily recreation needs of the elderly are increasing. The construction of a “residence-park” pedestrian environment for the elderly positively impacts their travel, which is a critical way to encourage the elderly to have outdoor leisure. In this study, Nanjing, a city with a high degree of aging and urbanization, was selected to obtain the satisfaction data of the elderly on the pedestrian environment from the residential area to Mochou Lake Park through a questionnaire survey and analyzed it with SPSS software. The result showed that: The satisfaction evaluation factors of “residence-park” pedestrian environment affecting the elderly are safety, accessibility, comfort, and pleasure respectively; Accessibility is the most critical factor affecting the satisfaction of walking environment of the elderly; There are significant differences in the fulfillment of pedestrian environment among the elderly with different social attributes; Accessibility is the most crucial factor affecting the satisfaction of pedestrian environment of the elderly. This paper proposes specific optimization directions for the improvement of the accessibility and safety of the pedestrian environment, to provide a view of both inside and outside the park for the renovation of the pedestrian environment suitable for aging.