Thecompositeofα-ZrPandfumedsilicawaspreparedbydispersingpredeterminedmolarratiosofpolycrystallineα-ZrPinwater.Admittancemeasurementofthesampleswasmadeinthefrequencerangefrom5Hzto1MHzandthetemperaturerangefrom-20℃to20℃.Theactivationenergyinconductionofthecomposites,withdifferentmolarfractionofα-ZrP,isabout5.9KJ/molat60%and40%relativehumidities.Theresultsshowthatthechargetransportmechanismwasnotchangedaftermixingfumedsilicaintoα-ZrPandthechargetransportmediumiswaterinα-ZrPandthecomposites.