The invention belongs to the field of grinding machines, and discloses equipment applied to grinding machine scrap iron discharging. The equipment comprises a protection shell, a first rotary disc, a discharging opening, a second rotary disc, a conveying chain, a feeding opening, a conveying belt, a motor and a conveying chain; the motor and the conveying chains are arranged in the protection shell, the first rotary disc is arranged at the upper ends of the conveying chains, the discharging opening is formed in the top of the first rotary disc, and the discharging opening and the first rotary disc are fixedly connected; and the second rotary disc is installed at the upper end of the discharging opening. The equipment is reasonable in design, low in production cost and personalized in design; through the arrangement of the feeding opening, manual control can be not needed, the requirement for high feeding accuracy is achieved, the machining accuracy is high, the hand labor intensity is reduced, the production efficiency is improved, and therefore the working efficiency is improved; and the drainage function is achieved, safety and stability are achieved, the service life is long, and the equipment is suitable for use and popularization.