The utility model relates to a hydraulic engineering technical field discloses a sharp bank protection of ecological water, plant the area including the slope body and arch vegetation, two horizontaladjacent arch vegetation are planted and set up counterfort sluicing groove between the area, slope body bottom sets up L type base, L type base passes through the banket and links to each other withthe escape canal, set up banket water drainage tank on the banket, banket water drainage tank links to each other with counterfort sluicing groove, the arch vegetation is planted and takes from the top down to set gradually the vegetable layer, the non -woven geotechnical fabric layer, earth filled layer returns, the former soil layer of metalling and embankment, vertically set up a plurality of rainwater infiltration pipes in the metalling, rainwater infiltration socle portion links to each other with the infiltration sump pit, infiltration sump pit upper end still sets up the pipeline that is connected to the escape canal. The utility model discloses an improve slope protection structure, realized the rapid discharge of sloping volume water to storing up the utilization to the rainwater,promoting vegetation growing, the existing side slope that does benefit to stabilizes, has protected environmental landscape again.