Since the programmatic document for the greenway construction in 9 cities of the Pear River Delta-Greenway Network Master Planning Outline for the Pearl River Delta was issued, greenway construction has been launched in all regions. This study proposed background of greenway study and problems in current greenway construction, analyzed the advanced overseas cases about networking and ecologicalization of greenways, and summarized their successful experience and their enlightenment for domestic greenway planning. By analyzing greenway construction in the United States in an all-around way, especially the typical greenway planning of Auckland Isthmus in New Zealand, it was proposed that sustainable development should be taken as the guiding ideology for greenway network planning of the Pearl River Delta, ecology-based planning adopted, ecological control and guidance of greenway defined, and high technology applied to create a scientific network.