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　ΔTave　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.