Urban green space helps to improve residents’ health and enhance social well-being. Encouraging the populace to engage with park green spaces within the 15 min life circle positively correlates with the optimal functioning of urban green infrastructure and advancements in constructing a health-conscious cityscape. The walkability and quality of the pedestrian environment adjacent to park green spaces are significant factors affecting the frequency of park visits. The paper focuses on Yueya Lake Park in Nanjing, utilizing recommended walking paths and street view images, adopting spatial analysis and image semantic segmentation. After delineating the service area, the evaluation of walking accessibility is conducted by analyzing several metrics, including the Pedestrian Route Directness, the number of turns, and the Green View Index. The results indicate that natural topography, cultural relics, and gated communities have significant impacts. The pedestrian environment requires improvement due to insufficient greening, oppressive enclosing elements, and facility encroachment. This paper proposes strategies such as softening park boundaries, opening communities, and implementing urban green street models, providing references for the path planning and built environment design from parks to residential areas.