A tile stacking device, comprising a lift platform mechanism, a push mechanism, a drive mechanism and a detection mechanism, wherein the lift platform mechanism is connected to the drive mechanism and is capable of rising and lowering under the driving of the drive mechanism; the push mechanism is connected to the drive mechanism and is capable of reciprocating under the driving of the drive mechanism; and the detection mechanism is arranged on one side of the lift platform mechanism and is capable of detecting a relative position of a Rummikub tile, wherein the drive mechanism comprises a drive motor, a first transmission mechanism and a second transmission mechanism, wherein the drive motor has an output end provided with a drive wheel, the drive wheel is connected to the lift platform mechanism through the first transmission mechanism, and the drive wheel is connected to the push mechanism through the second transmission mechanism, wherein the tile stacking device comprises a support mechanism, and the detection mechanism comprises a first position sensor, wherein the support mechanism is arranged on one side of the lift platform mechanism; and the first position sensor is arranged on the support mechanism to detect the relative position of the Rummikub tile, characterized in that a circumferential wall of the drive wheel is provided in turn with a single-tile sensing part, a five-tile sensing part and a seven-tile sensing part, and the detection mechanism comprises a second position sensor, wherein the second position sensor is arranged on the support mechanism; and the second position sensor is capable of detecting a relative position of the single-tile sensing part, the five-tile sensing part and the seven-tile sensing part. wherein the lift platform mechanism is connected to the drive mechanism and is capable of rising and lowering under the driving of the drive mechanism; the push mechanism is connected to the drive mechanism and is capable of reciprocating under the driving of the drive mechanism; and the detection mechanism is arranged on one side of the lift platform mechanism and is capable of detecting a relative position of a Rummikub tile, wherein the drive mechanism comprises a drive motor, a first transmission mechanism and a second transmission mechanism, wherein the drive motor has an output end provided with a drive wheel, the drive wheel is connected to the lift platform mechanism through the first transmission mechanism, and the drive wheel is connected to the push mechanism through the second transmission mechanism, wherein the tile stacking device comprises a support mechanism, and the detection mechanism comprises a first position sensor, wherein the support mechanism is arranged on one side of the lift platform mechanism; and the first position sensor is arranged on the support mechanism to detect the relative position of the Rummikub tile, characterized in that a circumferential wall of the drive wheel is provided in turn with a single-tile sensing part, a five-tile sensing part and a seven-tile sensing part, and the detection mechanism comprises a second position sensor, wherein the second position sensor is arranged on the support mechanism; and the second position sensor is capable of detecting a relative position of the single-tile sensing part, the five-tile sensing part and the seven-tile sensing part.