The　nitrogen-fluorine-doped　nano-titanium　dioxide　was　synthetised　by　hydrothermal　method,　which　was　compounded　at　180°　and　calcined　in　the　temperature　of　500　°.　With　phenol　taken　as　analog　source,　ultraviolet　lamp　as　light　source,　the　photocatalytic　degradation　was　carried　out　in　different　reaction　conditions.　The　results　showed　that,　under　the　condition　as　follows:　initial　pH　of　solution　was　6,　dosage　of　catalyst　was　2　g/L　and　oxygenated　by　a　magnetic　rotor,　the　ultraviolet　light　whose　intensity　was　40W,　could　degraded　the　initial　concentration　of　100　mg/L　phenol　completely　in　six　hours　by　the　photocatalyst.　©　2012　IEEE.