Aerogel is a highly dispersed solid three- dimensional nanomaterial that is currently known to have the lowest thermal conductivity .Because it is light blue, it is also called" blue smoke”. It shows many strange performances in the fields of heat, optics, electricity, mechanics and acoustics. It is known as "the magical material that changes the world." The microstructure exhibits a "honeycomb" porous morphology. The nanoporosity is in the range of 30-80 nm, the porosity can be as high as 99.8% and its unique surface area can be as high as 1000m2/g-1, which has a very low thermal conductivity. One of the top 10 most popular science and technology since the 1990s is a dual-use material with great application value.