The invention relates to a special device for track sleeper fixing, regulating and positioning in track-laying construction of a double-block type ballastless track of a high speed railway, in particular to a double-block type ballastless track screw regulator and a track sleeper positioning method. The regulator comprises a baseplate and a sliding plate, wherein the baseplate is roughly in a slab shape, and the sliding plate is used for fixing rails. One end part of the baseplate is provided with a flange with a levelly penetrated small hole in an upward extending mode, and the other end is vertically provided with a regulating screw hole I which is bolted with a vertical screw. The sliding plate is arranged between the flange and the regulating screw hole I on the baseplate and is horizontally and glidingly matched with the baseplate, one end of the sliding plate corresponding to the small hole is horizontally provided with a regulating screw hole II, and a horizontal regulating screw is penetrated in the small hole and is bolted with the regulating screw hole II. The regulator has the advantages of reliably realizing functions for fixing track sleepers, regulating the positions of track sleepers and finally positioning track sleepers while bearing the weights of track sleepers and running equipment on the track sleepers.