Aerogel is a nanoscale porous solid material with unique structure and properties, and it is widely used in various fields. Aerel has the characteristics of high porosity, low density, light weight, low thermal conductivity, and heat insulation. Aerogel can be combined with preoxidized fiber, fiber, and glass fiber to form composite materials, and these three composite materials determine the fire resistance level, which can reach the range of 400-1000 In addition, aerogel not only has heat insulation but also has excellent hydrophobicity, with a hydrophobicity of 97%, which is a material can meet multiple demands such as fire resistance, water resistance, and heat insulation.