The invention relates to the field of coal excavation equipment, and provides a tunneling roadway dust removing device which comprises a mist spraying system and a dust removing system arranged on theupper portion of a heading machine. The dust removing system comprises a front air suction hood, a transition air duct, a primary dust removing fan and a framework air duct which are sequentially connected. The primary dust removing fan comprises a pulling-out type axial flow anti-explosion ventilator and a dust collector, wherein the pulling-out type axial flow anti-explosion ventilator comprises an air suction barrel, an impeller, an anti-explosion motor and a motor shell, and the dust collector comprises an inlet pipe of a venturi structure, a vibration wire filtering plate, a dewatering device, a sewage outlet and a vibration wire filtering plate nozzle. The mist spraying system comprises a primary pressurizing device and a secondary pressurizing device, and output water pressure of the secondary pressurizing device is higher than that of the primary pressurizing device. The tunneling roadway dust removing device can effectively remove high-concentration dust in a tunneling roadway, improve underground coal mine operation environment and be widely applied to the field of coal mining.