New vacuum packaging bag

A new vacuum packaging bag relates to a vacuum packaging bag. Its bottom edge is not easy to produce openings and leaks, with good preservation effect. The utility model comprises a square bag body and a heat sealing seal; the square bag body comprises a front bag face and a back bag face; the two sides of the square bag body are provided with a heat sealing seal of the front bag face and the back bag face, and the upper part of the square bag body is provided with an opening The front bag face and the back bag face are integrally connected at the bottom, and the folded edge is the bottom edge of the square bag body; the front bag face and the back bag face of the square bag body are composed of a composite film laminated on multiple layers. Since the bottom edge of the square bag is the folded edge of the integrated composite film, the opening at the bottom edge and the air leakage phenomenon do not occur easily. The multi-layer laminated composite film forms a composite film that can block gas, block water and other properties. After vacuum blister packaging, the packaged object can be in a vacuum state to achieve the preservation effect.