The invention relates to an air energy dehumidification file cabinet, which comprises a file cabinet and a dehumidification device, wherein the dehumidification device comprises a compressor, a condenser, a storage, an expansion valve, an evaporator, a fan, a gas-liquid separator, a controller and a moisture absorber; the file cabinet comprises a cabinet shell and a file frame; the cabinet shell is provided with a drying cabinet and a machine case; heat energy of air is absorbed by utilizing the evaporator of a heat pump system, heat exchange is performed by utilizing the heat energy discharged by the condenser to heat the air in the file cabinet, heat in outside air is transferred to the air in the file cabinet, and files which are affected with damp are dried by utilizing the hot air in the file cabinet, so compared with an electric heating element, the air energy dehumidification file cabinet has the advantages that when the paper files are heated and dried, electric energy is saved.