Zirconia aerogels has been paid great attention for its unique properties. This paper summarizes the
structure and various preparation methods of zirconia aerogels. The preparation methods include organic salt hydrolyse
method(zirconia alkoxide hydrolyse method) and inorganic salt hydrolyse method (addition of propylene oxide meth鄄
od,dispersed inorganic sol鄄gel method). The addition of propylene oxide method is one of the most potential route for
the synthesis of high performance zirconia aerogels.