The invention provides a subway fireproof door and a subway fireproof door mounting method, and relates to the technical field of fireproof door equipment. The subway fireproof door comprises a door frame, a door leaf, a fireproof door closer, a pushing rod lock and a fireproof sealing piece; the door frame is connected with an inner wall of a subway fireproof door opening through the fireproof sealing piece; stability of the door frame relative to the inner wall of the subway fireproof door opening is ensured; the door leaf is internally filled with a fireproof foaming agent so that the doorframe can bear the higher temperature, thermal insulation of the door leaf and the door frame is ensured, and the door leaf can be better fixed at the door frame; it is ensured that the door leaf canbear extruding of piston wind with higher strength through fixed connecting of the pushing rod lock and a lock catch, and the technical problems that in the prior art, running of a subway has large potential safety hazards and the service life is short due to the fact that a fireproof door is easily affected by the high-pressure piston wind generated during running of the subway are relieved; andthe service life of the fireproof door is prolonged, and the more practical effect is achieved.