A paper inner container for storage of a refilling liquid content, which has a suction port that is formed in an upper surface thereof and allows insertion of a suction tube of a pump configured to pump up a liquid content and to dispense the liquid content to an outside of the paper inner container ; the paper inner container being made of a paper material having a thermoplastic resin laminated on both its surfaces, and comprising: four body panels , which form a body having a square tubular shape by coupling an edge of one of the four body panels to a vertical direction sealing panel ; characterized by a pair of upper-surface forming panels and a pair of side panels , which are continuously provided on upper edges of the four body panels to form the upper surface of the paper inner container; wherein the pair of upper-surface forming panels face each other and overlap in a vertical direction of the paper inner container ; wherein the pair of side panels are positioned between the pair of upper-surface forming panels to face each other and foldable up along with overlapping of the pair of upper-surface forming panels; wherein the pair of upper-surface forming panels have holes , which are formed at centers of the pair of upper-surface forming panels to serve as the suction port ; wherein one of the holes , which is formed in at least a lower upper-surface forming panel of the pair of upper-surface forming panels , is sealed by a tearable film ; wherein after the body is formed the lower upper-surface forming panel is folded inwardly while the side panels are folded up to inner surface sides into a triangular shape and an upper opening of the body is closed by the lower upper-surface forming panel ; and wherein a periphery of the lower upper-surface forming panel of the pair of upper-surface forming panels , an upper upper-surface forming panel of the pair of upper-surface forming panels, and the pair of side panels are bonded to seal the paper inner container . four body panels , which form a body having a square tubular shape by coupling an edge of one of the four body panels to a vertical direction sealing panel ; characterized by a pair of upper-surface forming panels and a pair of side panels , which are continuously provided on upper edges of the four body panels to form the upper surface of the paper inner container; wherein the pair of upper-surface forming panels face each other and overlap in a vertical direction of the paper inner container ; wherein the pair of side panels are positioned between the pair of upper-surface forming panels to face each other and foldable up along with overlapping of the pair of upper-surface forming panels; wherein the pair of upper-surface forming panels have holes , which are formed at centers of the pair of upper-surface forming panels to serve as the suction port ; wherein one of the holes , which is formed in at least a lower upper-surface forming panel of the pair of upper-surface forming panels , is sealed by a tearable film ; wherein after the body is formed the lower upper-surface forming panel is folded inwardly while the side panels are folded up to inner surface sides into a triangular shape and an upper opening of the body is closed by the lower upper-surface forming panel ; and wherein a periphery of the lower upper-surface forming panel of the pair of upper-surface forming panels , an upper upper-surface forming panel of the pair of upper-surface forming panels, and the pair of side panels are bonded to seal the paper inner container . <EOS>