In　this　paper　we　have　presented　the　degradation　of　Phenol　in　aqueous　solution　which　is　caused　by　pulse　discharge.　The　reaction　products　in　the　wastewater　dissolved　phenol　under　pulsed　discharge　were　tested　using　GC-MS.　Based　on　the　experimental　results　intermediate　products　include　2,4hydroxyphnel,　polyhydroxy　phenethyl　alcohol　and　so　on.　The　final　products　are　carbon　dioxide　and　water.　In　addition,　the　theoretical　analysis　has　been　conducted　These　results　will　be　helpful　for　further　studying　degradation　mechanism　of　wastewater　dissolved　phenol　under　pulsed　discharge,　using　either　AC　or　DC　voltage.