Modified phenolic fireproof insulation board is a new generation of thermal insulation, fireproof and sound insulation material. The material has the advantages of good flame resistance, low smoke emission, stable high temperature performance, heat insulation, sound insulation, and strong durability. The material strictly controls the water content, phenol content, aldehyde content, fluidity, curing speed and other technical indicators of the phenolic resin to achieve outstanding improvements in flexibility, adhesion, heat resistance, ablation resistance, etc. New varieties. These characteristics of phenolic foam are an effective way to improve the fire safety of walls. Therefore, phenolic foam is currently the most suitable insulation material to solve the fire safety of external wall insulation systems.