High-performance　hydrogels　with　favorable　mechanical　strength,　high　modulus,　sufficient　ionic　conductivity　and　freezing　resistance　have　far-ranging　applications　in　flexible　electronic　equipment.　Nevertheless,　it　is　challenging　to　combine　admirable　mechanical　properties　and　high　ionic　conductivity　into　one　hydrogel.　Herein,　a　facile　strategy　was　developed　for　the　preparation　of　the　hydrogel　with　excellent　strength　(1.45　MPa),　super　Young＇s　modulus　(8.85　MPa)　and　high　conductivity　(1.47　S/m)　using　starch　and　poly(vinyl　alcohol)　(PVA)　as　raw　materials.　The　starch/PVA/Gly/Na3Cit　(SPGN)　gel　was　firstly　cross-linked　by　crystalline　regions　of　PVA　upon　freezing-thawing　cycles.　It　was　further　immersed　in　the　saturated　Na3Cit　solution　to　enhance　the　interaction　between　the　substrates　through　the　salting-out　effect.　The　effect　of　soaking　time　on　the　crystallinity,　intermolecular　interactions,　mechanical　and　electrical　properties　of　SPGN　gel　was　demonstrated　by　X-ray　diffraction,　Fourier　transform　infrared　spectroscopy,　tensile　and　impedance　testing　measurements.　The　introduction　of　glycerol　and　Na3Cit　also　endowed　SPGN　gels　with　favorable　anti-freezing　properties.　The　SPGN　gel　could　maintain　high　mechanical　flexibility　and　ionic　conductivity　at　−15　°C.　©　2022