A　hydrogel　electrolyte　is　an　ideal　material　for　flexible　energy　storage　equipment　owing　to　its　mechanical　flexibility　similar　to　solids　and　its　ion　transport　ability　analogous　to　liquids.　However,　a　traditional　hydrogel　electrolyte　cannot　be　remolded　after　forming　and　cannot　be　reused　after　dehydration.　In　addition,　the　traditional　hydrogel　electrolyte　cannot　work　in　a　subzero　environment.　Here,　the　poly(vinyl　alcohol)/sodium　alginate/poly(ethylene　glycol)　(PVA/SA/PEG)　organohydrogel　electrolyte　was　successfully　fabricated　by　a　freezing-thawing　process　followed　by　soaking　in　a　saturated　NaCl　aqueous　solution.　PEG　could　improve　the　mechanical　property　and　endowed　the　organohydrogel　with　an　excellent　recyclability　and　healing　ability.　Meanwhile,　PEG　and　NaCl　in　the　organohydrogel　also　endowed　the　gel　with　low-temperature　resistance.　A　new　solution　was　provided　to　store　and　transport　hydrogels　by　virtue　of　the　good　rehydration　properties　after　the　drying　process.　The　flexible　all-solid-state　supercapacitor　was　fabricated　by　using　activated　carbon　as　the　electrode　and　PVA/SA/PEG　as　the　gel　electrolyte.　The　flexible　supercapacitors　presented　high　areal　capacitances　of　103.6　mF　cm-2at　2　mA　cm-2at　room　temperature　and　91.5　mF　cm-2at　−15　°C.　It　is　believed　that　the　PVA/SA/PEG　organohydrogel　electrolyte　with　outstanding　flexibility,　freezing　resistance,　recyclability,　and　high　ionic　conductivity　is　a　promising　candidate　for　the　next-generation　flexible　energy　storage　devices.　©　2021　American　Chemical　Society