Disclosed is an automatic spiral feeding machine which is capable of reducing labor intensity of workers and reducing raise dust during feeding. The automatic spiral feeding machine comprises a mixing feeding drum with two ends closed, a support is fixedly connected with the front portion of the mixing feeding drum, the mixing feeding drum is arranged obliquely, the rear end of the mixing feeding drum is communicated with a feed inlet with an opening upwards, the front end of the mixing feeding drum is communicated with a discharge outlet with an opening downwards, a spiral lever is mounted in the mixing feeding drum and rotates relative to the same, spiral blades are fixedly connected on the outer side of the spiral lever and correspond to the feed inlet and the discharge outlet, and a motor is fixedly mounted outside the mixing feeding drum and in transmission connection with the spiral lever and a speed reduction mechanism. The speed reduction mechanism is movably connected with the spiral lever, the middle of the mixing feeding drum is provided with a cleaning port, press plates are mounted on two sides of the cleaning port, and a cleaning port cover plate is fixedly mounted at the cleaning port through the press plates.