Abstract: Nano-titania has become a representative of semiconductor photocatalysts due to its excellent properties. Methods for the preparation of titania with good performance are very important in practice. This paper provides a review on the recent progress in nano-titania preparation，including gas，liquid and solid phase processes. The advantages and disadvantages of each process are summarized and analyzed based on the physical forms of the precursors. Prospects for future development in nano-titania preparation are proposed.