The invention discloses a low-temperature plasma deodorization device, which comprises a housing, an isolating grid plate, an insulating bracket, a fixed block, a transmitter box, discharge pole plates, an air filter net, an air feeder, a buckle, an air outlet, box legs, a shell cover, a distribution box, an operation panel and an air inlet. The low-temperature plasma deodorization device has the beneficial effects that the surfaces of the discharge pole plates are in a sharp sawtooth shape, so that a non-uniform electric field is generated between the two pole plates; and the required voltage is relatively small when the same discharge effect is generated. A polyethylene insulating material coats each discharge pole plate, so that the discharge pole plates are not exposed in moist air in a few of places with relatively high humidity, so as to ensure the discharge effect. The isolating grid plate is arranged between the discharge pole plates and the air outlet and is detachable, so that a few of electric arcs and the like generated during discharging are prevented from contacting the outside. Switches in the distribution box are contactors, so that control on high voltage through low voltage can be achieved; and the risk caused by direct contact on the high voltage is avoided.