Plastic packaging bag

The utility model relates to a plastic packaging bag which comprises a paperboard and a plastic board pressed on the paperboard, wherein a raised cavity for placing articles is formed between the plastic board and the paperboard; the paperboard is formed by pressing double layers of paperboards, and a breakable inner-layer paperboard and a firm outer-layer paperboard are sequentially arranged on the side near the plastic board from near to far; the bonding strength between the outer-layer paperboard and the inner-layer paperboard is smaller than the bonding strength between the inner-layer paperboard and the plastic board. While the plastic packaging bag is opened, firstly the outer-layer paperboard is torn off, and then the area corresponding to the raised cavity and the inner-layer paperboard is broken, the required article is taken out to use. Therefore, the good convenience in disassembly of package bag and maintaining of original package division area are realized. The integral strength of plastic packag