The technology of fire insulation board applies the cross-field and cross-disciplinary polymer technology, completely abandoning the molecular modification of the original materials such as EPS, or the path of adding flame retardant, introducing a new concept of fire prevention. During the process of thermal expansion, organic polymer drives inorganic molecules to the edge of the movement, and finally forms a honeycomb isolation chamber, so that each organic macromolecule particle forms a relatively independent fireproof individual, thus effectively blocking the heat conduction and flame transmission, achieving the effect of flame retardant.