Abstract: A series of experiments using non-thermal plasma coupled with catalyst for toluene removal were carried out.Based on reactor input energy density and removal efficiency and energy efficiency and inhibition for O₃ formation,catalyst load amount on the surface of γ-Al₂O₃ pellets and the performance of different catalysts were compared in the experiments.The results show the catalysis performance of 10% MnO_x/γ-Al₂O₃ coupled with non-thermal plasma was highest.Nano-TiO₂/γ-Al₂O₃ and MnO_x/γ-Al₂O₃ catalysts coupled with non-thermal plasma resulted in greater enhancement of toluene removal efficiency and energy efficiency.MnO_x/γ-Al₂O₃ operated on a better inhibition for O₃ formation in the gas exhaust.