TiO2　nanotube　film　is　a　promising　photocatalyst　associated　with　its　unique　physical　and　chemical　properties　such　as　optic,　electronic,　high　specific　surface　area.　Liquid-phase　decomposition　provides　a　feasible　way　for　the　preparation　of　functional　thin　film.　This　paper　reviews　and　analyzes　the　formation　mechanism　of　TiO2　nanotube　film　by　liquid　phase　deposition.　The　effect　of　preparation　parameters,　such　as　the　kinds　of　electrolyte　solution　for　the　preparation　of　anodic　alumina　template,　volume　fraction　of　Al2O3　on　the　template,　the　concentration　of　the　deposition　solution,　and　heat　treatment,　on　the　formation　of　TiO2　nanotube　film　has　been　analyzed.　The　effects　of　doping　of　metallic　and　nonmetallic　elements　on　the　photocatalytic　activity　of　TiO2　nanotube　have　been　discussed.