Vacuum packaging bag

The utility model discloses a vacuum packaging bag, which comprises a bag body, an opening provided on the bag body for small pieces of articles entering and leaving, a hollow connecting seat is sealed and arranged on the periphery of the opening and the bag body, and further comprises a cover. And a sealing ring, wherein the hollow connecting seat and the cover body are screwed and connected with each other through matching threads, and the sealing ring cushion is disposed at the connecting and connecting place of the hollow connecting base and the cover body, and the cover body is further provided thereon. One-way suction port. It combines the sealing opening and the opening for the entry and exit of the article into one. The hollow connection seat and the cover provided at the opening adopt a movable connection method, and the article can be taken out from the sealing opening without breaking the bag body. It can be used repeatedly and has the advantages of material saving and environmental protection, and it is very convenient to use.