Abstract: In this paper，the unique optical and electrical mechanism of nano-ATO material was introduced. The preparation techniques and processes of nano-ATO were reviewed. Also，the applications of ATO material in the fields of display，conductive and antistatic coatings，transparent and heat insulating coatings were summarized. At last，recommendations about overcoming the difficulties in the field of nano-ATO research and applications were brought forward，according to its optical and electrical properties.