Buffer piece for packaging box and packaging box

The utility model relates to the technical field of packaging, in particular to a buffering piece for a packaging box and the packaging box, the buffering piece for the packaging box comprises a partition plate and two buffering parts, the partition plate is connected with a second side plate of the packaging box, and the two buffering parts are connected with a first side plate and a third side plate of the packaging box correspondingly; clamping grooves are formed in the opposite sides of the two buffering parts; the partition plate, the buffering part and the packaging box are formed by one piece of paper. The utility model provides the separating plate, the buffering part and the packaging box which are formed by one piece of paper, so that the buffering part in the packaging box is a part of the whole packaging box, a product can be put into the packaging box only by bending the buffering part during packaging, and the separating plate plays a role in supporting the product, so that the packaging box is