This　paper　presents　an　experimental　investigation　of　the　effects　of　cyclic　freezing　and　thawing　on　dried　and　saturated　sandstone　cores.　Both　static　and　dynamic　tests　were　performed　to　determine　the　static　stress-strain　relationship,　uniaxial　compressive　strength,　elastic　modulus,　dynamic　stress-strain　relationship,　dynamic　strength　and　dynamic　energy　absorption　capacity　of　dried　and　saturated　sandstone　specimens　under　different　numbers　of　freeze-thaw　cycles.　The　degradation　in　several　mechanical　properties　were　discussed,　and　exponential　equations　were　introduced　to　describe　the　freeze-thaw　cycling　effects　on　the　static　and　dynamic　mechanical　behaviors.　The　results　show　that　both　the　static　and　dynamic　mechanical　properties　of　the　dried　and　saturated　sandstone　samples　decrease　with　an　increasing　number　of　freeze-thaw　cycles.　Both　the　static　uniaxial　compressive　strength　and　dynamic　strength　of　dried　sandstone　are　greater　than　those　of　saturated　sandstone,　while　both　the　static　elastic　modulus　and　dynamic　energy　absorption　capacity　of　dried　sandstone　are　less　than　those　of　saturated　sandstone.　The　degradation　of　the　dried　and　saturated　sandstone　cores　mainly　occurs　during　the　first　20　freeze-thaw　cycles.　Moreover,　the　same　exponential　equation　can　be　utilized　to　describe　the　freeze-thaw　effects　on　the　static　behavior　and　dynamic　behavior,　with　good　agreement.