Non-thermal plasma technologles offer an innovative approach to decomposing valatile organic compeunds (VOCs). The decompoesition of toluene from simulated flue gas was investigated using a pipe electrode with lor the for the generation of free radicals Corona characteristics and decomposition of toluene were investigated experimentally. In addltion, the decompesition mechanism of toluene was explored in view of reaction rate The experimental results showed that the humidity of additional gas has an important effect on corona characteristics and modes and stable stresmer corona can be generated through optimizing flow rate and humidity of additional gas. Applied vo#age, concentration of toluee, humidity of toluene and resident time are some important fictors affecting decomposition efflciency. Under optimizing cond~ions, the decomposition efficiency of toluenecan reach 80%. These results can give a conclusion that the corona radical shower technology is feasible and effective on the removal of toluene in the flue gas.