The utility model relates to the technical field of refractory brick tunnel kilns, and discloses refractory brick tunnel kiln waste heat utilization equipment which comprises a heat recovery assembly and a preheating assembly, the heat recovery assembly comprises a kiln body, the top of the kiln body is fixedly connected with a recovery box, the top of an inner cavity of the recovery box is fixedly connected with a heat storage box, and the top of the recovery box is fixedly connected with an air feeder. The end, away from the air feeder, of the heat absorption pipe penetrates into an inner cavity of the heat storage box. The utility model has the beneficial effects that: heat in high-temperature flue gas is recycled through the heat recovery assembly, so that the heat heats air entering the burner, and normal-temperature air is prevented from entering the burner to reduce the internal temperature of the burner and increase the fuel consumption; part of recycled high-temperature air is directly conveyed to the preheating section of the kiln body through the preheating assembly to conduct preheating treatment on the materials entering the kiln, fuel consumption in the material roasting process is further reduced, and the waste heat utilization rate of the tunnel kiln is increased.