The invention relates to a red-hot coke waste heat recovery semiconductor temperature difference generating set the structure of which is a cuboid barrel both ends of which are provided with movable doors. One end of the barrel is a feeding hole, and the other end is a discharging hole; the outer side of the barrel is provided with a semiconductor temperature difference generating module; the outer side of the semiconductor temperature difference generating module is provided with a cooling water tank; and the hot end surface of the semiconductor temperature difference generating model adheres to the barrel, and the cold end surface thereof adheres to the cooling water tank. Red-hot coke enters the barrel from the feeding hole; the movable doors at both ends are closed to close the coke in the barrel; the hot surface of the semiconductor temperature difference generating module absorbs the heat of the red-hot coke through the barrel, and the cold surface thereof is cooled by the cooling water tank, and thus, the temperature difference is formed on the two end surfaces of the semiconductor temperature difference generating module, and the potential difference is generated by the Bezier effect, thereby achieving the purpose of generating electricity by utilizing the waste heat of the red-hot coke. The device has the advantages of simple structure, low cost, small occupied area, low investments, no maintenance, long service life and the like; and noise, abrasion and medium leakage are not generated in the process of generating the electricity by using the recovered red-hot coke.