Abstract:ByimprovingtestingprincipleandtestingtongsinQJ3074—1998,,thetestingaccuracyof fourprobemethodforelectricresistivityofwirematerialswasraisedandthetestingscopewaswidened.Throughtheexperimentsoftheeffectofsamplelengthandtestingconditionsonthetestingresults,theelectricresistivityofvariouscarbonfibersischaracterizedsystematicallyandthatlaidanimportanttechnical foundationforestablishingstandardofthetestingmethodofelectricresistivityforcarbonfibers.