In order to research the flow pattern determinant method of shallow flow on slope surface, from the view point of hydraulics and sediment transport mechanics, a series of experiment of shallow flow on slope surface were performed on organic glass slippery bed and artificial rough bed(grain size of sediment is from 0.5 mm to 1 mm) with four kinds of gradient. And the flow pattern of shallow flow on slope surface under above conditions was analyzed and compared by applying hydraulics binary fluid Reynolds number and sediment transport mechanics turbulent flow Reynolds number. The results show that turbulent flow Reynolds number can better reflect flow pattern of shallow flow on slope surface.