In view of the higher requirements of thermal environment,a novel light-weight high-temperature insulation material was proposed and fabricated.The system used high temperature resistant phenolic resin as matrix and added fibers and functional fillers as reinforcement.Then by performing low-pressure curing molding through pre-mixed sheet to obtain the final material.The density,thermal properties and mechanical properties of the material were tested.The results indicate that the density of the material is 0.6 to 0.9 g/cm³,the initial decomposition temperature is higher than 450 ℃,the tensile strength under room temperature and 200 ℃ are higher than 12 MPa and 10 MPa respectively,and the thermal conductivity is lower than 0.25 W/(m·K).All the properties can be designed and regulated according to application environment.The prepared heat insulation material test piece passed the ablation examination of model wind tunnel,the large-sized special-shaped structural cabin prepared by the material system passed the combined force-heat test at the same time, and the results can meet the overall design requirements.