An apparatus for fixing a satellite antenna for a construction machine is disclosed, which can adjust the height of the satellite antenna that is installed outside a cab to receive a signal of a satellite receiver installed inside the cab when the equipment is transported or operated in a workshop having a low ceiling. The apparatus for fixing a satellite antenna for a construction machine that is mounted outside a cab to receive a signal of a satellite receiver installed inside the cab, includes a bracket composed of a first mount portion mounted on an outer surface of the cab, a second mount portion formed to extend from the first mount portion to be bent, and a third mount portion formed to be bent against the second mount portion; a satellite antenna mounted on the second mount portion to receive a satellite signal; and a hanger fixing a pole, which is laid down to prevent the damage of the satellite antenna due to contact with an obstacle when the equipment is transported or operated, to the third mount
