Workbench support additionally provided with stabilizing assembly

The workbench support comprises a plurality of stand columns and a plurality of cross beams, the cross beams are connected with the stand columns through triangular blocks, the stabilizing assembly is arranged in a square frame formed by the stand columns and the cross beams, and the stabilizing assembly comprises a left half part, a right half part and a fastening bolt connected with the left half part and the right half part. Supporting rods are hinged to the left half part and the right half part, and the free ends of the supporting rods can be tightly supported on the triangular blocks. When the fastening bolt is screwed, the left half part and the right half part are away from each other, the supporting rod hinged to the left half part tightly supports the triangular block on the left side, and the supporting rod hinged to the right half part tightly supports the triangular block on the right side, so that the stabilizing assembly is additionally arranged on the basis that the triangular blocks are fixed