Moisture-proof honeycomb paperboard

The utility model relates to the technical field of honeycomb paperboards, and discloses a moisture-proof honeycomb paperboard which comprises a honeycomb board, a filling block is fixedly installed on the side wall of the honeycomb board, a moisture-proof mechanism for preventing the honeycomb board from being affected with damp is arranged on the side wall of the filling block, and the moisture-proof mechanism comprises a side apron board. The side apron boards are fixedly installed on the side walls of the filling blocks, storage grooves are formed in the inner walls of the side apron boards, the storage grooves are filled with drying agents, and insertion openings are formed in the side apron boards. According to the damp-proof honeycomb paperboard, moisture on the ground can be adsorbed through the drying agents, and the damp condition of the side apron boards is reduced; the drying agent in the storage groove can be replaced through cooperation of the soft paperboard and the hard paperboard so as to gua