The　galvanic　corrosion　behaviors　of　NiC　filled　conductive　silicon　rubber　(CSR)　with　different　resistivity　coupled　to　magnesium　alloys　were　investigated　in　3.5%　sodium　chloride　solution　at　different　temperatures.　Such　investigations　were　carried　out　by　means　of　electrochemical　measurement,　weight-loss　determination,　and　surface　characterization.　The　results　indicated　that　the　changes　of　CSRs＇　resistivity　and　the　temperature　of　the　electrolyte　would　affect　the　Tafel　slope,　cathodic　corrosion　current,　and　linear　polarization　resistance　of　the　cathodic　branch　of　the　polarization　curve.　The　lower　the　resistivity,　the　larger　the　average　galvanic　corrosion　current　density　and　the　average　galvanic　corrosion　rate　of　Mg　alloys　at　the　same　temperature.　The　corrosion　morphology　revealed　that　the　greater　the　corrosion　current　density,　the　more　serious　the　corrosion　on　the　surface　of　Mg　alloys.