The invention discloses a coke oven raw coke oven gas waste heat recovery system. The system solves the problem that the existing coke oven raw coke oven gas waste heat recovery system has detects of non-ideal steam amount and quality, and realizes comprehensive recovery of coke oven raw coke oven gas waste heat. The system comprises a riser evaporator circulation system and a reheating system. The riser evaporator circulation system comprises a riser evaporator and a steam pocket. A water inlet and a steam outlet of the riser evaporator are respectively communicated with a water outlet and a steam inlet of the steam pocket. The upper part of the steam pocket is communicated with a user steam pipe net. The reheating system comprises a reheating device. The reheating device comprises two inlets, one of the inlets is communicated with the lower part of the steam pocket and the other one of the inlets is communicated with a desalted water pipe. An outlet of the reheating device is communicated with the user steam pipe net. Through separation and reheating of low-quality steam in the steam pocket and heating of desalted water, a part of steam is produced so that steam quality and amount are improved.