Abstract: Methanol decomposition to hydrogen and carbon monoxide at ambient condition was conducted via corona discharge.DC corona and AC corona with frequency of 2000 Hz were tested.The experiment confirmed that a short residence time（< 10^-1s）through the corona region could give a significantly high H₂ yield from methanol decomposition.Hydrogen production rate and energy efficiency increased with increasing CH₃OH feed concentration.Relative to DC corona discharge,AC corona with waveform of sinusoid, or sinusoidal triangle was much more effective to generate H₂.However AC corona with waveform of sawtooth was relatively weak for the decomposition of CH₃OH.