The invention discloses an automatic apple packaging machine which comprises an operating platform, wherein landing legs are connected with four corners of the operating platform; universal wheels are mounted below the landing legs; transmission idler wheels are mounted on the left side of the interior of the operating platform; middle shafts are mounted in the transmission idler wheels; a packaging cylinder is mounted on the right side of the interior of the operating platform; leakage holes are uniformly formed in the packaging cylinder; a transformation disc is mounted below the packaging cylinder; a packaging bag storage room is connected with a position below the transformation disc; a support rod is mounted on the right side of the packaging cylinder; and a feeding device is connected with the right side of the support rod. According to the automatic apple packaging machine, as the packaging cylinder is arranged, ten apples can be simultaneously packaged, the packaging efficiency is improved, and the workload of a packaging worker is reduced; as the transmission idler wheels are arranged, the packaged apples can be transmitted to a next working procedure, and the carrying quantity of the worker is reduced; as the transformation disc is arranged, a sealed product can be transmitted to transformation idler wheels; and the automatic apple packaging machine is simple and practical and excellent in application prospect.