The invention discloses a feeding protection device for a refining furnace. The feeding protection device for the refining furnace comprises a feeding hopper for the refining furnace, a blocking balland a hauling mechanism for lifting and lowering the blocking ball. A feeding opening is formed in the bottom of the feeding hopper and used for feeding materials to the refining furnace. The blockingball is located above the feeding opening and the upper part of the blocking ball is connecting with the hauling mechanism. According to the feeding protection device for the refining furnace, structure design is reasonable, a feeding channel is changed to a funnel-typed feeding hopper and an iron ball can be achieved to rise and fall by hauling, normal feeding is guaranteed and smoke in the refining furnace is prevented from rising and spilling out; damage to a device by heat rising and spilling out is avoided, smoke in a steel ladle refining furnace is prevented from exhausting, micro-positive pressure in the refining furnace is maintained and smelting results and quality of liquid steel are guaranteed; and the structure is simple, and the improving cost is low.