A reradiation apparatus for terrestrial digital broadcasting which can continue to reradiate a broadcasting signal even if the receive state of the broadcasting signal deteriorates intermittently with movement is provided. The reradiation apparatus for the terrestrial digital broadcasting includes plural antennas which are provided in mutually spaced along the running direction of a mobile, plural receiving processing parts provided corresponding to each antenna, a master selecting part which chooses any one of the receiving processing parts as a master, a monitoring part which supervises receive states of the terrestrial digital broadcasting signals of the plural receiving processing parts, a switching part, and a reradiation unit. The switching part chooses the terrestrial digital broadcasting signal received by the receiving processing part selected as a master or the terrestrial digital broadcasting signal received by other receiving processing part based on the receive state of the receiving processing part chosen as the master, and the reradiation unit reradiates the selected terrestrial digital broadcasting signal in the mobile.