A　steady　mesoporous　zirconia　nanocrystallite　has　been　successfully　synthesized　by　the　anionic　surfactant-assisted　route.　The　DSC-TG,　FT-IR,　XRD,　TEM,　UV-Vis　and　N　2　adsorption-desorption　analyses　have　been　used　for　the　structural　characterizations.　The　DSC-TG　showed　that　the　anionic　surfactant　had　a　significant　co-operative　effect　on　the　synthesis　of　zirconia　nanocrystallite.　The　XRD　patterns　indicate　that　the　as-prepared　zirconia　took　a　pure　tetragonal　phase　even　calcinated　at　600　°C.　The　TEM　analysis　displays　that　the　zirconia　exhibits　worm-like　mesoporous　structure,　which　can　be　well　maintained　after　calcination.　The　pore　size　is　about　1.8　nm,　observable　from　the　TEM　images.　Compared　to　that　of　the　commercial　sample,　a　significant　blue　shift　of　the　UV-Vis　spectra　of　the　zirconia　nanocrystallite　after　calcination　at　500　°C　has　been　demonstrated.　The　N　2　adsorption　analysis　illustrates　that　the　zirconia　has　an　improved　BET　surface　area　after　calcination,　indicative　of　good　thermal　stability.