The automatic shrink wrapping machine forms the packaging by stretching the lower film, then places the product into the pre-formed lower film cavity. It subsequently applies vacuum or vacuum inflation inside the sealing chamber, seals the upper and lower films together, and cuts the product through transverse and longitudinal cuts, all in one automated process. This simplifies operation, significantly reduces labor, enhances production efficiency, and achieves packaging automation. It is particularly suitable for bulk packaging of various fresh and processed food items such as chicken wings, chicken feet, bean products, seasonings, meat products, and other small packaged materials.