Fireproof door with ventilation function

The utility model discloses a fireproof door with a ventilation function, which relates to the technical field of fireproof doors and comprises a fireproof door with an upper ventilation slot and a lower ventilation slot, and normally open ventilation structures are arranged in the upper ventilation slot and the lower ventilation slot. When the fireproof door is used, elastic installation of the connecting block is limited through the thermosensitive glass column, the rack plate limits the gears, meanwhile, the sealing plates are kept in the horizontal state through the connecting effect of the supporting shaft, and therefore air at the two ends of the fireproof door is subjected to convection ventilation through the upper ventilation groove and the lower ventilation groove; when a fire occurs, a thermosensitive glass column is heated and broken, and a connecting block drives rack plates to move upwards and reset, so that the two rack plates drive a plurality of gears to rotate, the gears drive a sealing plat