Abstract: In order to study the effect of high voltage electrostatic discharge elimination and the effectiveness of electrostatic protection,ionization test method was adopted to measure and analyze the influencing factors of needle electrode corona discharge at atmospheric pressure,such as voltage,frequency,power dissipation distance,electrode gap,balance voltage and so on. The result indicates that,the best power dissipation effect appears in high-voltage corona discharge within the frequency range of 1.8 kHz to 2 kHz;the DC and pulse corona discharge with high voltage has an obvious reverse charging effect,and the elimination effect increases with the increase of the voltage and the decrease of the distance.