Steel structure curtain wall interlayer fireproof plugging system structure

The utility model relates to the field of building curtain wall interlayer fire prevention, in particular to a steel structure curtain wall interlayer fireproof plugging system structure which comprises a building curtain wall, an upper cross beam, a lower cross beam and stand columns arranged on the sides of the upper cross beam and the lower cross beam, and the upper cross beam and the lower cross beam are arranged on the inner side of the building curtain wall. Wherein the upper cross beam is fixed with the building structure main body, and an upper fireproof cotton layer is filled among the upper cross beam, the stand columns and the building structure main body; main body structure steel beams are arranged below the building structure main body, lower hanging steel plates are arranged at the bottoms of the main body structure steel beams in an extending mode, L-shaped steel plates are arranged between the lower hanging steel plates and the lower cross beams, and lower fireproof cotton layers are filled a