Optical　information　encryption　is　closely　related　to　information　security,　and　smart　hydrogels　with　tunable　optical　properties　under　external　stimuli　have　received　much　attention　as　optical　storage　materials.　However,　it　is　still　challenging　to　achieve　complex　information　camouflage　and　large-capacity　information　storage　in　hydrogel　systems.　Herein,　a　hybrid　encoding　strategy　afforded　by　an　aggregation-induced　emission　(AIE)　fluorescent　hydrogel　with　multi-stimuli　responsiveness　is　pioneered　as　a　feasible　alternative　for　multiple　camouflage　strategies.　More　specifically,　the　photoluminescence　intensity　of　a　system　can　be　independently　or　mutually　tuned　by　specific　stimuli,　including　solvent　(DMSO/H2O),　pH　(NaOH/HCl),　and　metal　ions　(Fe3+/EDTA2-),　leading　to　the　precise　protection　or　decoding　of　encrypted　information.　That　is,　only　the　correct　stimulus　sequence　can　unlock　the　stored　real　information,　thus　enabling　the　system　with　the　functionality　of　multilayer　encryption　and　on-demand　decryption　of　information.　We　envisage　that　the　present　strategy　of　multiple　information　carrying　and　showcasing　in　AIE　hydrogels　through　stimulation　sequence　regulation　exhibits　great　potential　for　secure　information　writing　and　anticounterfeit　encryption.　©　2024　American　Chemical　Society