Packaging box

The utility model provides a packing box which comprises a box body with openings at two ends and folding parts movably connected to the openings at the two ends of the box body, and the folding parts can be connected to the openings at the two ends of the box body in a manner of protruding towards the inside of the box and expanding towards the outside of the box so as to correspondingly form a limiting space for clamping objects contained in the box and open the openings at the two ends of the box body. The folding part is provided with a clamping position and a separating position which can be switched by external force so as to respectively clamp and separate objects contained in the box. According to the packaging box, by arranging the box body and the folding parts, containers such as marmite and the like are placed into the box body from the open end of the box body, the folding parts are pushed into the box by hands, so that the folding parts are located at the clamping positions, namely, the folding