Abstract:The flow of ecosystem services has been a hot topic in the comprehensive research fields of ecology, economics and geography since the 1990s. Water supply service has obvious flow characteristics and occupies a central position among many ecosystem services. It is a bridge connecting the ecosystem (supply area) and human production and life (demand area or beneficiary area), and is an important way to regulate water flow, water circulation, and water quality. Analyzing the flow of water supply services (conveyor area) from the perspective of supply and demand, and simulating the flow path, play a key role in realizing the benefits of water supply services. It also emphasizes the coordination and cooperation of social economy and ecological environment. It has important theoretical and practical significance for establishing the relationship between ecosystems and socio-economic systems. Therefore, research on the spatial flow of domestic water supply services needs to be carried out urgently. This research attempts to build a framework for the analysis of ecosystem water supply services, identify the scope of supply and benefit, determine the service flow mode, flow and flow path, and explore the causal relationship between water supply and demand. The literature analysis method is used to systematically sort out the research progress of the spatial flow of water supply services, and the vertical and horizontal comparisons are carried out respectively. The results show that:(1) According to the time sequence, it can be divided into three periods the basic germination period, the theoretical development period and the spatial correlation research period. (2) According to the functional area, it can be divided into three parts, water supply area, demand area and transportation area, and the quantitative analysis methods of each area are compared and analyzed. (3) Comprehensive analysis results, foreign research has developed rapidly, mainly based on model simulation. The research on domestic water supply services as a whole is in its infancy, and stays at the research level of the respective temporal and spatial patterns of ecosystem supply and demand. There is a lack of in-depth research on the relationship between water supply and demand services and spatial paths.