Graphite EPS insulation board is a new generation of thermal insulation material which is further refined by chemical method on the basis of traditional EPS. Due to the addition of special graphite particles, graphite EPS insulation board can reflect and absorb infrared ray, so the thermal insulation performance is at least 30% higher than that of traditional EPS, the thermal conductivity can reach 0.032, and the combustion performance level can reach B1 level. Compared with traditional EPS, graphite EPS insulation board is favored by people because of its better thermal insulation and fire resistance.