The invention provides a flour processing vibrating screen. The flour processing vibrating screen comprises a rack, a screening assembly, a planetary gear set, springs I, a circular ring, protruding parts, telescopic rod assemblies and baffles, wherein a supporting frame in the screening assembly is arranged on the planetary gear set through the springs I, a filter cloth type screen is arranged onthe supporting frame, the circular ring is located below the planetary gear set, the protruding parts are arranged on the upper end face of the circular ring, the telescopic rod assemblies movably installed in the planetary gear set in the axis direction of a revolution component, and the telescopic ends of the telescopic rod assemblies make contact with the bottom of the supporting frame. Through revolution of planet wheels in the planet gear set along the circle center of a sun wheel, when the baffles make contact with the protruding parts, the telescopic ends in the telescopic rod assemblies can be driven to ascend, then the supporting frame can be pushed to ascend, when the baffles break away from the protruding parts, the supporting frame descends, then cyclic rotation can drive thescreening assembly to shake, and the position of the telescopic ends relative to the supporting frame is changed constantly, so that the shaking direction is correspondingly changed, and the vibrationeffect is guaranteed.