According to most documents, the origin of greenway idea can be traced back to Frederick Law Olmsted and his famous Boston Park system completed in 1867. The plan connects Franklin Park with Arnold Park, Jamaica Park, Boston Garden and other green space systems. The green space system is 25 kilometers long, connecting Boston, Brooklyn and Cambridge, and connecting with the Charles River. Later, Charles Eliot expanded his idea and extended his green grid to the whole Boston metropolitan area, covering 600 kilometers and connecting five coastal rivers. (1900 ~ 1945): greenway planning for landscape architects

At this stage, olmsted Brothers, Eliot 1I and Henry Wright are mainly engaged in the planning of greenways. The olmsted brothers completed the 64-kilometer Portland Square Ring in memory of Lewis and Clark, which was later extended to 225 kilometers by planners. Open space planning in Massachusetts completed by Eliot II. Henry Wright completed the green space and greenway planning in Radburn, New Jersey. At the same time, the National Park Service (NPs) has carried out a large number of park road planning practices, such as Blue Ridge Parkway. 1960s-1970s: Greenway Planning under the Influence of Environmental Protection Movement

During the 1960s and 1970s, the environmental protection movement in the United States flourished, forming three greenway research centers and representative researchers.

Philip (University of Wisconsin) found that most of the important resources were distributed on both sides of the river corridor when mapping the natural and cultural resources in Wisconsin, and completed the Wisconsin Heritage Trail Proposa 1. Macharg, an Iranian, wrote "Design with Nature", especially one chapter focused on the planning of river corridors. The Maitland research group led by UniversitV 0f Massachusetts paid more attention to quantitative research. (1980s-1990s): Naming of Greenway Movement

In the 1980s, the report of the President's Committee on Outdoor Recreation in the United States emphasized the opportunities that greenways brought to residents to get close to nature. 1990, Littl first defined greenway. In North America, there are thousands of greenway planning practice projects at present, but the research work is seriously lagging behind, and most of them are limited to project summary. (1990s-present): Greenway has become an international sport.

At present, the greenway movement is developing vigorously, and there are thousands of greenway projects at the international, national and regional levels in the world. In terms of theoretical research, a large number of research results have emerged, a large number of research monographs have been published, many academic conferences on greenways have been held, and doctoral theses on greenways have appeared. The network about greenways is also overwhelming.