Hydrogen is considered to be an ideal source of energy that hydrogen production attractsmuch attention.Compared with traditional chemical processes,plasma technology can offer a unique way to induce gas phase reactions.In this paper,effect of pulse repetition rate and flow rate of CH4,on plasma cracking methane for hydrogen production are experimentally investigated through micro-and nanosecond pulsed dielectric barrier discharge (DBD).The experimental results show that the main gas productions are H2,C2H6,C2H4 and C3He after the cracking.