On the basis of clarifying the concepts of ecological hydrology and ecological hydrological model， the research progress of GIS-based ecological hydrological model data set optimization is emphasized，and the significant problems existing in the related research of ecological and hydrological coupling based on GIS are discussed，namely scale conversion， coupling points and coupling methods.Aiming at the current problems， the future development direction of the eco-hydrological model is elaborated.The establishment of large-scale and widely applicable ecological hydrological models will be the focus of future research.