This　paper　aims　to　study　the　electrical　parameters　(electrical　resistivity　and　alternating　current　(AC)　impedance　spectroscopy)　of　cement　paste　with　rice　husk　ash　(RHA).　The　water　to　cement　(Mass　ratio　of　water　to　cement　(w/c))　ratios　of　the　paste　in　this　study　varied　from　0.4　to　0.5.　The　mass　ratio　of　rice　husk　ash　in　each　w/c　ratio　of　specimens　ranged　from　0%　to　15%　by　t　mass　of　cement.　Scanning　electron　microscopy　(SEM)　and　X-ray　diffraction　(XRD)　were　used　to　determine　the　microstructures　of　specimens.　Moreover,　the　slump　flow　and　plastic　viscosity　of　fresh　paste　were　determined.　The　results　indicated　that　with　the　increasing　dosage　of　RHA,　the　fluidity　decreased,　while　the　plastic　viscosity　increased.　Meanwhile,　a　high　w/c　ratio　led　to　a　low　plastic　viscosity　and　high　slump　flow.　The　electrical　resistivity　of　RHA　cement　paste　gradually　ascended　with　the　increasing　curing　period.　The　conduction　of　specimens　intricately　changed　by　mixing　RHA,　a　reasonable　equivalent　circuit　was　selected　to　describe　the　conduction　mechanism　by　AC　impedance　spectroscopy.　Additionally,　the　results　of　XRD　and　SEM　showed　that　RHA　could　effectively　promote　the　hydration　process　as　well　as　decrease　the　size　and　number　of　cracks　in　hardened　cement　paste.