Pocket parks are defined by two core attributes: “pocket” (smaller than community parks) and “park” (publicly accessible recreational green space). They primarily serve high-density urban areas by providing proximate daily recreation, supplemented by social, health, and ecological benefits. Their decentralized service mode contrasts with large parks, relying on flexibility (e.g., time-sharing use) and simple components (greenery + hardscape). Spatial traits include adaptable size/shape, liminal boundaries (often enclosed by buildings), and compact layouts prioritizing shared activity zones. Management varies across government, institutional, or community custodians. Their efficiency fills critical gaps where conventional parks are infeasible.