This utility model discloses a feeding device for a Rotary Koji Making Machine, comprising a feeding platform arranged above the rotating disc, wherein a moving conveyor is arranged on the feeding platform that can move radially back and forth along the rotating disc. The moving conveyor is equipped with a conveyor belt that matches the feeding port of the rotating disc bending machine, and also includes a controller that can adjust the moving speed of the moving conveyor and the conveying speed of the conveyor belt separately. During the working process, the speed of the moving conveyor and the conveying speed of the conveyor belt are variable speed controlled by the controller to achieve precise control of the amount of material falling, ensuring a constant amount of material on each section of the conveyor belt, thereby effectively improving the rotation. The flatness of the material after the discharge of the Rotary Koji Making Machine ensures the smooth implementation of subsequent process operations