A product packaging bag capable of real-time recycling of waste, which is redesigned outside the packaging bag to fold the sides of the packaging bag several times during the production of the packaging bag, and then separating the front and back sheets of the packaging bag from the side edge. Bonded to form two pockets, one of which can be used to bond sealed goods, the other only to seal the bottom of the mouth and not to adhere to the seal, to store rubbish, and to recover the dust generated during the use of the goods in the bag. A packing bag.