The invention discloses a fireproof material for strongbox. The fireproof material is prepared from the following raw materials in parts by weight: 4 to 7 parts of ammonium polyphosphate, 6 to 8 parts of borax, 3 to 5 parts of antimony oxide, 20 to 25 parts of triphenyl phosphate, 6 to 8 parts of polyaniline, 25 to 30 parts of polyethylene, 3 to 4 parts of pentaerythritol, and 8 to 12 parts of expanded perlite. The manufacturing cost is low, the using performance is qualified, the material is affordable for common families, the thermal insulation effect is good, the high temperature can be effectively obstructed, the safety of articles in the strongbox can be guaranteed, and at the same time, the material is safe and environment-friendly.