In　the　present　study,we　tried　to　understand　the　spatially　distributed　damage　in　sandstone　samples　under　the　coupled　stress-freeze-thaw(SFT)conditions.Firstly,uniaxial　compressive　stresses(i.e.0　MPa,10　MPa,20　MPa,and　25　MPa)were　applied　to　the　samples,and　then　freeze-thaw(FT)cycles(0,8,16,and　24)were　performed　on　the　uniaxially　stressed　samples　to　realize　the　SFT　coupling.Next,real-time　CT　scanning　was　conducted　to　observe　the　induced　damage.The　total　porosity　was　introduced　to　quanti-tatively　evaluate　the　damage　degree.The　local　porosity　variation,with　the　distance　from　the　center　of　the　sandstone　sample,was　analyzed　to　understand　the　spatial　distribution　of　damage.Finally,the　coupling　effects　of　SFT　on　the　damage　gradient　were　discussed.The　results　indicate　that　the　porosity　rises　with　FT　cycles,and　the　applied　stresses　can　accelerate　the　increase　in　porosity.The　damage　increases　expo-nentially　with　the　distance　from　the　center　of　the　sample.The　damage　presents　a　spatial　gradient　dis-tribution,not　the　commonly　used　uniform　distribution　in　various　studies.The　damage　gradient　increases　with　FT　cycles,and　the　increasing　rate　in　damage　gradient　decreases　at　uniaxial　stress　of　0　MPa　and　10　MPa　first,but　the　increasing　rate　in　damage　gradient　increases　with　FT　cycles　then　at　stress　increasing　to　20　MPa.