Flexible　spintronics　has　recently　sparked　an　upsurge　due　to　the　growing　demand　for　miniaturization,　high-speed,　integration　and　energy-saving　in　portable　and　wearable　devices.　However,　the　stress/strain　during　the　substrate　deformation　process　is　inevitable　for　flexible　spintronic　devices　and　may　be　available　to　assist　the　switching　of　the　magnetization,　accordingly.　Therefore,　combined　with　the　previously　discovered　high　energy　efficient　sunlight　controlled　magnetization　switching,　we　propose　a　bending-insensitive　photo-voltaic　flexible　spintronic　device　constructed　by　PET/Ta/Permalloy/(PC71BM:　PTB7-Th)/Pt　heterostructure.　The　bent　device　achieved　a　281　Oe　of　maximal　ferromagnetic　resonance　(FMR)　field　shift　by　photoelectrons　in　a　reversible　manner　under　the　sunlight　soaking　at　room　temperature.　And　the　magnetic　change　as　a　function　of　the　external　light　radiation　was　precisely　determined.　These　findings　provide　a　feasible　way　to　combine　the　flexible　substrate　and　photoelectrons　for　energy-saving　and　precise　manipulation　of　magnetism　in　bendable　spintronic　devices.　(C)　2022　Elsevier　B.V.　All　rights　reserved.