The invention discloses a potential-transferring rapid arc extinguishing device. The potential-transferring rapid arc extinguishing device comprises a conduction arc extinguishing device and a fixed rack, wherein the conduction arc extinguishing device comprises an insulation arc extinguishing pipe and a T-shaped metal rod, the T-shaped metal rod is arranged in the insulation arc extinguishing pipe in a sleeved way, a first metal magnet block is fixedly arranged at the top of the insulation arc extinguishing pipe and is fixedly connected with a metal part of a soft ladder, and a second metal magnet block and a third metal magnet block are respectively arranged at an upper end and a lower end of the T-shaped metal rod. The T-shaped metal rod arranged in the insulation arc extinguishing pipe is used for sliding contact, an end part of the T-shaped metal rod is simultaneously and electrically connected with shielding clothes of an operator, the metal electromagnetic blocks arranged at the top of the insulation arc extinguishing pipe is electrically connected with the metal part of the soft ladder, thus, original and direct charge transferring between the operator and the metal soft ladder is changed to charge transferring between the T-shaped metal rod and the metal electromagnetic blocks, an arc generated during charge transferring can be immediately eliminated, and the influence of the arc generated during potential-transferring charge and discharge on the operator is ensured.