The utility model relates to the technical field of porcelain baking furnaces, and discloses a false tooth frame for a porcelain baking furnace, which comprises a supporting seat, a top tray is arranged at the top of the supporting seat, a threaded column is rotatably connected to the bottom of the top tray, the bottom of the threaded column is in threaded connection with the supporting seat, a plurality of clamping grooves are formed in the outer side of the top tray and the outer side of the supporting seat, and the clamping grooves are in threaded connection with the supporting seat. A connecting rod is arranged on the inner side of the clamping groove, a push plate is slidably connected to the outer side of the connecting rod, a hollow cover is fixedly connected to the outer side of the push plate, and spring telescopic rods are fixedly connected to the upper side and the lower side of the inner wall of the hollow cover. According to the false tooth fixing device, the hollow cover is fixed through the clamping of the limiting clamp and the supporting seat and the connecting rod and the clamping groove, then the threaded column is rotated to push the top disc and drive the pressing plate to move, false teeth are fixed through the spring telescopic rod, the net bag can be disassembled and assembled according to needs by disassembling and assembling the connecting rod along the clamping groove, the number of the fixed false teeth can be adjusted according to needs, and the occupied space is reduced.