Abstract: Under the background of climate change and rapid urbanization, such ecological problems as water shortage, water pollution and flood disasters have increased demand for new hydrological management strategy. It has become an important way for urban sustainable development to give full play to the hydrological regulation service function of green infrastructure (GI). Through literature research, this paper summarizes the supply mechanism of green infrastructure’s hydrological regulation service, which includes the mechanism of GI regulation of water quantity and quality, the quantitative evaluation method for hydrological regulation services and the influencing factors. It hence puts forward to choose GI reasonably according to local conditions. Through quantitative evaluation and accurate simulation, it makes comparisons of the multiple programs. It calls for enhancing public participation and policy protection to upgrade systematic approaches for hydrological regulation services.