The utility model discloses a gas scrubbing water return flume for a gas recovery system of a converter. The gas scrubbing water return flume comprises a U-shaped return flume body, gas blow pipes, gas inlet pipes, a sealed gasket, an inner fastening screw, and an outer fastening screw, wherein a via-hole is formed on the bottom of the return flume body; the gas blow pipes are arranged in the via-hole; the upper ends of the gas blow pipes are communicated with the return flume body, and the lower ends are communicated with the gas inlet pipes; the inner fastening screw and the outer fastening screw are placed on the upper ends of the gas blow pipes and are respectively arranged on the inner side and the outer side of the bottom of the return flume body; the sealed gasket is sheathed on the upper ends of the gas blow pipes; and the upper end face of the sealed gasket keeps contact with the inner fastening screw, and the lower end face keeps contact with the inner side surface of the bottom of the return flume body. The gas blow pipes are uniformly distributed on the front side and the rear side of the center line of the bottom of the return flume body; and the lower ends of the gas blow pipes in the front row and the rear row are respectively communicated with the gas inlet pipes in the front row and the rear row. The gas scrubbing water return flume can enable the gas scrubbing water therein to flush so as to prevent dust in the gas scrubbing water from depositing in the return flume, thereby effectively obviating the blockage of the return flume caused by dust deposition.