Dredging method for basement floor water seepage

The invention discloses a dredging method for basement floor water seepage. The dredging method is characterized by comprising the following construction steps that, a seeping point of a basement floor is found, the periphery of the seeping point is cut open, and concrete is removed through boring, so that a water seepage seam is found; a ditch is formed from the seeping point to a drainage ditch, a water collecting box is installed at the seeping point, a drainage pipe is arranged and led to the drainage ditch, and water in the drainage pipe converges into a water collecting pit; the periphery of the water collecting box is filled with a gravel water filtering layer; a dense steel wire net is laid, and fine aggregate concrete is poured, flattened, pressed and polished. The dredging method has the advantages that the method is simple and effective, the problem that a seeping point of the basement floor cannot be blocked is fundamentally solved, construction efficiency is improved, the pressure of underground water on the floor is reduced, repeated seepage of the floor is avoided, and the increase of the seeping point is avoided.