Abstract: Thermal radiation makes a great contribution to heat transfer within protective fabrics under high temperature conditions. The thermal attenuation within the high-temperature fabric is investigated under high flux conditions in the present study. A numerical model analysis of thermal protective fabric is given by using one-dimensional finite differential technique. The governing heat transfer equations are solved numerically and effective thermal conductivity is calculated from the steady-state results. Predicted results are in good agreement with experimental data and the results are helpful to the optimum design of thermal protective fabrics and thermal protection system (TPS).