The utility model relates to a ballastless track's restoration field specifically indicates a half straddle type restoration structure for III plate -type ballastless track of CRTS. Including anchor in subaerial support pier stud and the counter -force pier stud in the horizontal both sides of bed plate, be provided with the teflon plate that the level was arranged on the support pier stud, last vertical jack, suspension in a plurality of crossbeams of bed plate and the horizontal both sides of track board top installed of teflon plate, the crossbeam directly stretches into the last end face contaction of track board top and track board along track transversal arrangement, crossbeam, and another first lower extreme of crossbeam is pushed away the end by vertical jack top and withstands, and the centre of crossbeam is provided with the fixed knot of anchor on the bed plate and constructs, be provided with horizontal thrustor or horizontal tensioning equipment between counter -force pier stud and the bed plate side. The utility model discloses simple structure, construction and installation is convenient, can be under the circumstances that keeps bed plate and track board structural integrity, effectually carry out quick adjustment to the bed plate, very big spreading value has.