The utility model discloses a conveyer of large experimental test piece, its characterized in that: including large experimental test piece, steel sheet, gyro wheel, elliptic type bolt, bolt hole, rope, the utility model discloses an at first shaping large experimental test piece on the steel sheet bores to the side of the steel sheet and gets the bolt hole, in the rotatory income bolt hole of elliptic type bolt, then passes the elliptic type bolt with the rope, and the steel sheet that will place on the gyro wheel pulls to the experiment position, and then develoies the laboratory experiment under the triaxiality condition. Have easy operation's advantage, not only save time, laborsaving, can reduce appurtenance's use moreover, and then improve experimental efficiency, develop the laboratory experiment under the triaxiality condition more high -efficiently.