The invention provides a powdered activated carbon regeneration furnace for preprocessing by an efficient catalytic oxidation method. The powdered activated carbon regeneration furnace comprises a base, a furnace body, a catalytic device, a feeding inlet, a burner, a separation plate, a spiral conveyer, a conveying motor, a destructive distillation cavity, an activation cavity, a sprayer, a spraying pipe, a water tank, a storing cavity, a discharging outlet and an exhaust pipe. The furnace body is fixed on the base and is successively divided to the catalytic device, the destructive distillation cavity, the activation cavity and the storing cavity by the separation plate from top to bottom. The feeding inlet is installed above the catalytic device. The discharging outlet is installed at the lower part of the storing cavity. Through the installation of the catalytic device, the powdered activated carbon regeneration furnace is capable of conveniently performing the catalytic oxidation treatment before the recovered activated carbon regeneration, reducing the adsorptive property of impurities adsorbed in the activated carbon, and improving the regeneration effect and efficiency. A solid-liquid separator, a recovering pipe and a recovering box are installed to recover and reuse catalysts. The actual use effect is better, and the powdered activated carbon regeneration furnace is convenient for popularization and application.