Packaging box

The utility model discloses a packaging box, and relates to the technical field of packaging of backlight modules. The packaging box comprises an inner box capable of bearing a to-be-packaged object. The inner box comprises an inner box body and an inner box cover detachably arranged at an opening of the inner box body, a plurality of clamping grooves are formed in the opposite side walls of the inner box body in a one-to-one correspondence mode, the multiple clamping grooves are formed in the height direction of the inner box body at intervals, clamping blocks are arranged on the opposite sides of the inner box cover, and the clamping blocks can be selectively matched with the clamping grooves of different heights in a clamped mode. According to the packaging box, when a to-be-packaged object is not fully packaged, the clamping blocks on the inner box cover are selected to be clamped with the group of clamping grooves closest to the to-be-packaged object, the to-be-packaged object in the inner box body is fi