Adverse slope type step energy dissipater

The invention discloses an adverse slope type step energy dissipater, which comprises a straight section close to a water inlet, and an adverse slope type step section connected with the straight section, wherein the adverse slope type step section consists of multi-stage adverse slope type steps; the adverse slope type steps are steps of which the upper surfaces are adverse slope surfaces; the slope of the bottom slope of the adverse slope type step section is the same as that of the bottom slope of the straight section; the horizontal projection length and height of various stages of the adverse slope type steps which form the adverse slope type step section are the same; the horizontal projection length L1 is equal to 0.4 to 18m, and the horizontal projection height h1 is equal to 0.5 to 3m. A front aerator can be arranged on the straight section, so that the cavitation erosion resistance is improved.