Near-infrared(NIR)transparent　inverted　all-inorganic　perovskite　solar　cells(PSCs)are　excellent　top　cell　candidates　in　tandem　applications.An　essential　challenge　is　the　replacement　of　metal　contacts　with　transparent　conductive　oxide(TCO)electrodes,which　requires　the　introduction　of　a　buffer　layer　to　pre-vent　sputtering　damage.In　this　study,we　show　that　the　conventional　buffers(i.e.,small　organic　mole-cules　and　atomic　layer　deposited　metal　oxides)used　for　organic-inorganic　hybrid　perovskites　are　not　applicable　to　all-inorganic　perovskites,due　to　non-uniform　coverage　of　the　vulnerable　layers　underneath,deterioration　upon　ion　bombardment　and　moisture　induced　perovskite　phase　transition.A　thin　film　of　metal　oxide　nanoparticles　by　the　spin-coating　method　serves　as　a　non-destructive　buffer　layer　for　inor-ganic　PSCs.All-inorganic　inverted　near-infrared-transparent　PSCs　deliver　a　PCE　of　17.46％and　an　average　transmittance　of　73.7％between　780　and　1200　nm.In　combination　with　an　18.56％Cu(In,Ga)Se2　bottom　cell,we　further　demonstrate　the　first　all-inorganic　perovskite/CIGS　4-T　tandem　solar　cell　with　a　PCE　of　24.75％,which　exhibits　excellent　illumination　stability　by　maintaining　86.7％of　its　initial　efficiency　after　1400　h.The　non-destructive　buffer　lays　the　foundation　for　efficient　and　stable　NIR-transparent　inverted　inorganic　perovskite　solar　cells　and　perovskite-based　tandems.