Abstract: In the context of advocating ecological progress and optimizing the quality of territorial space quality and creating beautiful settlements, the urban design has shifted from focusing on the physical form of the space to a green urban design for sustainable development, and has moved more actively from the shaping of public space to the construction of city-wide system. In the context, this research, by reviewing the linear corridor practice in the Pearl River Delta represented by the greenways, historical trails and blue ways, summarizes and analyzes the experience and shortcomings in practice from three aspects: planning objectives, technical means and construction effectiveness. It concludes that on the whole, the blue-green network is developing in the direction of synthesis, but the network and systematic deficiencies led to inadequate play of the cyclical effect of ecological elements, and the green resources service capacity required by the urban built environment needs to be improved. On this basis, from the perspective of the interaction between nature, society and the city focused on the green urban design, this research proposes strategies and implementation path for the construction of region-wide blue-green spatial network including taking the blue-green network as a resilient green infrastructure to support the urban life system, repairing urban and rural environment with network re-naturalization, enriching the network connotation with the social and cultural vitality, taking the construction of the blue-green network as an opportunity to promote synergistic social and economic development, and providing a green path for high-quality urbanization development.