Nano-TiO2 powder was synthesized by the continous-orderly-controlled-explosive nucleation method([1]). The experiment has effectively degenerated the n-amyl alcohol gas, and investigated its influencing factor by using the Nano-TiO2 photocatalytic activity([2]). When the initial density of the n-amyl alcohol gas is 1714.7mg/m(3), the TiO2 calcination temperature is 450 degrees C, the dosage of catalyst is 9.98g. The experiment reacts 40 minutes later, degeneration rate of the n-amyl alcohol achieves above 98%, and the degeneration rate increases constantly with the extension of reaction time. This study provides a solution for the environment pollution problem which the n-amyl alcohol produces.