To provide a fireproofing material that makes it possible to prevent it from being instantaneously destroyed by fire together with a wiring material or a piping material and can close a gap between a wall and a wiring material or a piping material to fulfill a fireproofing function.

The fireproofing material 11 is filled in a gap between a penetrated portion formed in a compartment wall and a wiring material or a piping material passed through the penetrated portion. The fireproofing material 11 is formed by housing a cushioned and incombustible block body 12 in a pouched armoring member 13 formed of a material that is predominantly composed of a soft synthetic resin material and has fire-resistive performance and is expanded by heat.