The design combines trash bags and the trashcan in a clever way, and enables users to replace trash bags in a faster and easier manner. The product may be used in two scenarios: hook a roll of trash bags at the bottom of the trashcan, pull a bag up and fix it on the top; when the bag is full, pull it up for disposal and a new bag will be in place. The “U” shape is compatible with all kinds of plastic shopping bags, aiming to encourage users to recycle their used plastic shopping bags.