The invention discloses a concrete plate roughening slope protection structure. The structure comprises a concrete plate forming a sloping surface, wherein one or more rows of staggered reversed arc direct impact wave attenuation piers are distributed on the concrete plate; each reversed arc direct impact wave attenuation pier comprises a cross arm and a vertical arm which is connected to the middle of a cross wall; and the cross arm and the vertical arm are in transition connection with each other through cambered surfaces on both sides of the vertical arm. The reversed arc direct impact wave attenuation piers reflect continuously and directly impact waves repeatedly and turbulent current is formed in a reflecting and direct impacting process, so that the kinetic energy of the waves is reduced greatly, swash height is reduced remarkably, the aim of reducing stormy waves, the swash height and the crest elevation of a dam is fulfilled, the ideal effect of eliminating the waves is achieved, work amount is decreased effectively and a large number of invested funds is saved. The structure has the advantages of effectively decreasing the work amount, effectively improving the roughness and water permeability of the sloping surface, effectively reducing the swash height of the waves and reducing the crest elevation of the dam, along with simple construction, small investment and good effect on wave attenuation and slope protection.