Abstract: Temperature in Dielectric barrier discharge(DBD) reactor increased obviously under high frequency alternating current(AC).The change trends of DBD temperature were tested.Heat transfer mechanism was established,and formula of energy distribution and ΔT_ave were educed.The experimental results show that DBD temperature increased with voltage and time increasing in high frequency discharge and their relationships were non-linear.DBD temperature increased with frequency and time increasing,and with gas influent rate decreasing.All of these factors and DBD temperature presented linearity.At the end,there was a better foreground for application to industry or family of low frequency AC in the future.