External　stimuli　induced　effective　regulations　of　luminescent　material　are　of　significant　interest　in　the　development　of　smart　optical　devices.　Here,　by　simply　doping　with　Er3+　in　the　0.94Bi(0.5)Na(0.5)TiO(3)-0.06BaTiO(3)　(BNTBT)　ferroelectric　host,　using　the　bendable　mica　substrate,　and　exerting　mechanical　strain　(bending)　or　light　illumination　(via　photochromic　reaction),　the　all-inorganic,　highly-transparent　and　flexible　Er-doped　BNTBT/Mica　luminescent-ferroelectric　thin　films　were　designed　and　fabricated,　displaying　strain-induced　dramatically　elevation　of　up-conversion　photoluminescence　(PL)　intensity,　suppression　of　PL　concentration　quenching,　outstanding　endurance　and　durability,　convenient　illumination-mediated　PL　quenching.　And　the　strain-induced　structural　changes　and　local　lattice　distortions　of　the　thin　films　were　further　explored　through　theoretical　calculations　and　Raman　measurement.　Our　results　can　supply　the　guidance　of　designing　other　luminescent-ferroelectric　materials　with　controlled　PL　properties　via　easy　mechanical/photo　stimuli　for　expanding　the　application　of　multifunctional　wearable　memory　devices.　(C)　2021　The　Chinese　Ceramic　Society.　Production　and　hosting　by　Elsevier　B.V.