The invention provides an automatic feeding material frame which comprises a supporting bottom plate, a screw rod supporting frame, a bearing plate, a material positioning connecting plate, a first material bottom plate, a second material bottom plate, guide columns, a servo motor, worms, worm gears, screw rods and nut pairs. The screw rod supporting frame is used for fixing the screw rods in the axis direction and is perpendicular to the supporting bottom plate, and the screw rods are arranged on the inner sides of two arms of the supporting frame respectively. A station converting cylinder is arranged on the lower portion of the bearing plate, and the guide columns are arranged on the left side and the right side of the first material bottom plate and the left side and the right side of the second material bottom plate and are respectively and fixedly connected with the bearing plate. The first material bottom plate, the second material bottom plate and half nuts are connected to be used as the nut pairs and can move up and down along the guide columns. The shaft heads of the screw rods are connected with the worm gears, and the servo motor is arranged on the lower portion of the supporting bottom plate and is connected with the worms through couplers. According to the automatic feeding material frame, the screw rods are controlled to rotate through transmission of the servo motor, the worm gears and the worms, the corresponding nut pairs gradually ascend or descend along with rotating of the screw rods, automatic and precise feeding can be achieved, two material bottom plates are provided, when materials on one bottom plate are run out, the second bottom plate is used for supplementing materials quickly, continuous material feeding is achieved, and the production efficiency is improved.