Double chamber vacuum packaging uses a vacuum cover to alternate between two vacuum chambers, thereby improving work efficiency. When one vacuum chamber is being evacuated, the other vacuum chamber can hold packaging materials; Suitable for product packaging in large-scale production enterprises, the entire process of vacuuming, sealing, cooling, and exhausting can be completed according to the set program by simply pressing the vacuum chamber cover during operation. After vacuum packaging, the items can prevent oxidation, mold, insect damage, moisture, and extend the storage period of the product. Mainly applicable to food, electronic products, chemical products, metal hardware, and other hardware products.