Fireproof and soundproof steel structure building material and preparation method thereof

The invention relates to the technical field of high-strength fireproof house building steel processing, and discloses a fireproof and sound-proof steel structure building material which comprises a steel building main body and a supporting frame fixedly connected to the lower portion of the steel building main body, and the steel building main body further comprises a steel structure frame installed in the steel building main body; a fireproof coating is arranged on the outer surface of the steel structure frame, a first sound insulation layer is arranged in the steel structure frame, and a sponge layer is arranged on the inner side of the first sound insulation layer. According to the fireproof and soundproof steel structure building material and the preparation method thereof, the thickness of the coating of the fireproof coating is set to be 5mm-10mm, and the weight of the coating of the fireproof coating is set to be 80g-90g, so that the adhesion effect of the fireproof coating on a steel structure frame