The invention discloses a method for rapidly replacing vertical coating rollers of a galvanizing unit. The method comprises the steps that the connecting state of old vertical coating rollers and equipment relevant to a production area is released; the old vertical coating rollers are transferred to a rapid transferring device of a safety area from the production area by a balance lifting device and a rapid hoisting device and then transferred to a hoisting platform to be hoisted out; novel vertical coating rollers are transferred to the safety area from the hoisting platform by the transferring device and transferred to the production area by the balance lifting device and the rapid hoisting device; and the novel vertical coating rollers are connected with the equipment relevant to the production area. According to the method, the coating rollers are transferred by the transferring device, the balance lifting device and the rapid hoisting device, pure-manpower carrying is avoided, not only is the labor intensity of operators reduced, but also the transferring duration is reduced by a large margin, and the duration needed for replacing one set of coating rollers is shortened to be about one hour from three hours in the past.