PROBLEM TO BE SOLVED: To provide a paper box container for restraining cutting by an inner side plate cutting line, even if external force is received.SOLUTION: A paper box container 1 comprises: a body part 10 having an opening 10a; and a lid part 50 for covering the opening, and the body part comprises: a bottom plate 11; a first inner side plate 12 erected from one of a pair of first bottom plate side edge parts 11a becoming mutually parallel in the bottom plate; a side plate 13 erected from the other of the pair of first bottom plate side edge parts; and a second inner side plate 14 erected from respective ones of a pair of second bottom plate side edge parts 11b crossing with the first bottom plate side edge part in the bottom plate, and the lid part comprises: a top plate 51 connected to the side plate; a first outer side plate 52 erected from an edge part of the top plate; and a pair of second outer side plates 54 erected from the edge part of the top plate, and the inner side plate cutting line 41 is
