The invention belongs to the technical field of firemen protection equipment and in particular relates to a heat insulation layer material for firemen fire protective clothing. The heat insulation layer material comprises base cloth, rubber columns on the base cloth, and a polytetrafluoroethylene film compounded on the base cloth, wherein the base cloth is aramid fiber 1313 spunlace nonwoven cloth. The polytetrafluoroethylene film is compounded with the base cloth by adopting a hot pressing process to form a whole body. The rubber columns are uniformly arranged on the back surface of the base cloth at certain intervals by adopting a glue dispensing method. The heat insulation layer material has the characteristics of having the flame-retardant, heatproof, waterproof, breathable effects and the like, and is suitable for processing the firemen fire protective clothing; the personal safety of firemen during fire extinguishing operation can be effectively protected.