The invention relates to an end surface quenching tester which comprises a head, a rack, a resistance furnace, an end quenching water spraying test table, an X-axis left and right moving mechanism ofthe head, a Y-axis up and down moving mechanism of the head and a workpiece, wherein a water spraying bracket workpiece automatic centering mechanism is arranged at the upper part of the end quenchingwater spraying test table and is fixedly mounted on the front side of the rack; a plurality of mechanical arms are fixedly mounted on the front part of the head; the water spraying bracket workpieceautomatic centering mechanism comprises a water spraying bracket, transverse rails are symmetrically and fixedly mounted on the front and back sides of the upper part of the water spraying bracket; transverse rods are arranged on the upper sides of the transverse rails; the transverse rods are connected to corresponding transverse rails through a plurality of slide blocks; and semi-circular clampplates which are uniformly distributed are fixedly mounted on the inner side of each transverse rods through connecting parts. The end surface quenching tester provided by the invention grabs workpieces automatically, so that the using precision of equipment is improved; the problems of errors of manual operations, scalds and the like are reduced, a plurality of workpieces can be experimented within a regulated time fully, and meanwhile, the plurality of workpieces are grabbed, so that the production efficiency of the tester is improved greatly.