||Silica aerogel is a porous-structured material with low thermal conductivity. Due to this thermal property, silica aerogel has attracted attention for their wide range of applications such as thermal insulator, wave adsorption. However, from the point of view of applications, aerogel has poor mechanical property and it makes they cannot be easily handled. Therefore, fiber-reinforced aerogel blanket has been prepared as an alternative to improve mechanical property. In this study, ceramic fiber reinforced silica aerogel blankets for insulation were prepared under ambient drying using sodium silicate as a source of silica and TMCS as a surface modification agent. The ceramic fiber as a supporting skeleton. To increase thermal insulation property of silica aerogel blanket, its surface treated with acid to enhance compatibility between fiber and aerogel. The silica aerogel blanket is characterized by scanning electron microscope, Fourier transform infrared spectroscopy.