The utility model provides a prefabricated member for a laryngeal part of a cement-kiln used grate type cooler. The prefabricated member is assembled vertically and horizontally by two shapes of wear-resisting blocks; and the two shapes of wear-resisting blocks comprises a plurality of square shaped wear-resisting blocks (12) and corner shaped wear-resisting blocks (13). In the design of the prefabricated member, an arc groove is arranged on two adjacent side surfaces; an arc bulge is arranged on other two adjacent side surfaces; a metal anchor piece (10) is pre-buried on each wear-resisting block before the prefabrication of the wear-resisting blocks; the wear-resisting blocks are suspended on a joist steel (11) by the metal anchor piece (10); a heat preservation layer (14) is also arranged between the wear-resisting blocks and the joist steel (11); and labyrinth shaped expansion joints pieced together can prevent the smoke and the flame from springing out, thereby preventing the thermal insulation material and the anchor piece from the erosion of smoke effectively. The producing and the baking of the wear-resisting blocks are finished in a refractory material factory, therefore, no water is not contained; the wear-resisting blocks can be installed directly after being transported to the site and can be used directly after being installed on the site; therefore, the maintenance time can be saved and the problems that refractory castable at the laryngeal part of the grate type cooler is cracked, no expansion joints exist, the water content is high, the baking can not be implemented, the maintenance time is long, the wear is serious, the repair rate is high, the construction difficulty is large, the repair time is long, and the service life is short can be solved.