The invention belongs to the technical field of industrial furnaces, and particularly relates to a degreasing furnace used for drying zirconia ceramic members. The degreasing furnace comprises a furnace body, a placing device, a spoiler device, a heating device, an air inlet device, an air regulation device and a tail gas treatment device. A furnace door and an explosion-proof device are arranged on the front portion and the rear portion of the furnace body respectively, a furnace pipe is arranged in the furnace body, a heat preserving layer is arranged on the outer side of the furnace pipe, the placing device is arranged in an inner cavity of the furnace pipe, the heating device is arranged below the furnace pipe, the spoiler device is communicated with the inner cavity of the furnace pipe, the air inlet device and the air regulation device are arranged at the bottom of the furnace body, and the air regulation device is connected with the tail gas treatment device. As the spoiler device is arranged, a circular air way is formed after air enters the inner cavity, the zirconia ceramic members are evenly heated in the placing device, and therefore the production efficiency and the product quality are improved.