PURPOSE: Provided is a replantation tree cutting device which cuts the roots of the tree to be replanted in a domed shape, and simultaneously, vinyl-packages them, thereby reducing the working time and enhancing the working efficiency. CONSTITUTION: A replantation tree cutting device comprises a swing base(22) fitted to the boom of heavy equipment, a flexible shaft driven by a plurality of oil pressure motors, a flexible column surrounding the flexible shaft, and a plurality of disk cutters fitted to the outer periphery of the flexible column. First and second cutter housings(30 and 30') are rotatably fitted to the swing base internally with the disk cutters such that they are capable of being coupled to or decoupled from the swing base by the operation of first and second oil pressure cylinders(70 and 70'). A first oil pressure motor(41) is built in the first cutter housing to rotate the flexible shaft, and a second oil pressure motor(42) is built in the second cutter housing to rotate the flexible shaft.
