Abstract: Inordertostudythevariationofrotatingspokefrequencyofthecylindricalhallplasmathrusterinrelatedworkingparameters,andtofindoutthemethodtorestraintherotatingspoke,theannularanodewasdividedintotwoindependentsegments.Bymeasuringtheelectricalsignalbetweenthetwoindependentanodesectionswithdischargevoltage，dischargecurrentanddeliveringrateofpropellantandsoon,thespokephenomenonwasqualitativelyandquantitativelyanalyzed.Theresultsindicatethattherotatingspokefrequencyobservablyincreaseswiththeincreaseofdischargevoltageandpressure.Andthespokerotatingphenomenoninthenearanoderegionisgenerallypresent,eveninhighvoltageconditions.Thefrequencyofrotatingspokeismainly10～45kHz.Theaxialcurrentoscillationaccountsforabout50%ofthetotalcurrentintheisolatedanodesegment.Reducingtheflowofworkingfluidandthedischargevoltageisbeneficialtosuppressrotatingspoke

Key words: Hallthruster, rotatingspoke, nearanoderegion, anodesegment, oscillation