The rotating gliding arc discharge plasma has high energy density and good chemical selectivity

so it exhibits good application prospect in dry reforming of methane. The characteristics of AC rotating gliding arc discharge driven by tangential air flow were analyzed and dry reforming of methane was studied in the experiment. The results show that the AC rotating gliding arc discharge program can be divided into the Breakdown Gliding（B-G） Mode and Steady Arc Gliding（A-G） Mode according to the characteristics of current. The FFT transformation of the electrical signal reveals that the waveforms of current and voltage are distorted seriously in B-G mode

and the power of B-G mode is less than that of A-G mode. With the steady gliding of the arc

the voltage rise and the power consumption of the gliding arc continuously increase. In the dry reforming of methane experiment

the effect of reforming is affected by the CH4 content

discharge voltage

and gas flow rate. When the CH4 content increases to 40%

the energy efficiency of the dry reforming of methane is 3.58 mmol/kJ. Increasing the voltage can enhance the conversion rate of reactants

but the energy efficiency decreases.The faster gas flow rate shortens the residence time of reactants

thereby inhibiting the effect of dry reforming of methane.