This chapter establishes the institutional framework essential for successful pocket park implementation. It details China’s multi-tiered planning system controlling park quantity, structure, location, and boundaries. Key relevant international approaches include regulations and indicators, flexible compensation mechanisms between green space classes, and integrating “informal green spaces”. Support policies encompass direct government funding and indirect incentives like development compensation and opening encouragement. Implementation is guaranteed through refined design guidance (group/individual levels), comprehensive public participation, and diverse financing/management models, ensuring planning effectiveness and service quality.