The invention discloses an anti-scouring concrete repairing device. The anti-scouring concrete repairing device comprises a mixing and stirring device and a slurry supplement pipe. The mixing and stirring device is used for stirring concrete slurry, and the concrete slurry is injected into concrete cracks through the slurry supplement pipe. The anti-scouring concrete repairing device is characterized in that the mixing and stirring device can cyclically work to prepare materials first and then to discharge the materials, and a plurality of pipelines arranged between the mixing and stirring device and the slurry supplement pipe. The anti-scouring concrete repairing device has the advantages that the cracks are fully filled, the probability of slurry leakage is lowered, the surface flatnessis high after reinforcement, and a grouting pipe can slide in the cracks to achieve slurry supplement; the mounting stability of a support is high, and a wall is not likely to be damaged, or the adhesion strength of a plate body is high; intermittent material supplement and quantitative stirring are conducted, so that raw material waste is reduced, the cracks are fully filled, the probability of slurry leakage is lowered, the surface flatness is high after reinforcement, the grouting pipe can slide in the cracks to achieve slurry supplementation; and the mounting stability of the support is high, and the wall is not likely to be damaged, or the adhesion strength of the plate body is high.