The invention discloses an iron attraction impurity removal apparatus for grains. The apparatus comprises a pedestal, an impurity removal box, a vibration box and a support frame, the support frame is fixed on the pedestal, the vibration box is arranged above the support frame, the impurity removal box is arranged above the vibration box and is connected with the vibration box, the top of the impurity removal box is provided with a feeding hole, the feeding hole is connected with a feeding pipe, one side of the vibration box is provided with a discharging hole, the discharging hole is connected with a discharging pipe, the support frame is provided with a motor, the motor is connected with a vibration sieve above the vibration box and drives the vibration sieve, and a magnetic block is arranged in the impurity removal box. The arrangement of an iron attraction device in present grain impurity removal apparatuses removes small iron impurities in grains, and avoids the entrance of the small iron impurities to subsequent operations. The apparatus disclosed in the invention has the advantages of simple structure, convenient installation and operation, low production cost and good impurity removal effect, is suitable for the vast rural area, and is conducive to improving the quality of the grains.