The invention discloses a flood discharging chute which is provided with a baffle wall used for dissipating energy through the colliding of the water flow. The invention is characterized in that the flood discharging chute is internally provided with at least a corrugated baffle wall along the horizontal direction, the height of the baffle wall is lower than the water depth at vena contraction, and the height of the part near the upper reaches is lower than that of the part positioned at the lower reaches. As the flood discharging chute designed by the invention is internally provided with thecorrugated baffle wall(s), the flow direction of the water flow in the chute can be changed, and the picking stream of the water flow can be promoted, and the releasing water flow is aerially collided by utilizing the energy of the water flow and the resistance of the air, thereby achieving the energy dissipating effect, and reducing the energy dissipating pressure and the flushing at the lower reaches of the floodway channel. The design of the invention expands the application range of the flood discharging chute, and is especially applicable to the constructions with the characteristics that the lower reaches of the flood discharging chute have a plurality of ground joints, and the anti-scour ability is weak.