Conductive　hydrogels　have　great　potential　in　flexible　electronics　due　to　their　flexibility,　excellent　biocompatibility　and　diverse　functionalities.　However,　most　rapid-gelation　hydrogels　tend　to　manifest　weak　and　fragile　due　to　vigorous　reaction　process　and　poor　adaptability　in　cryogenic　environment,　which　severely　impede　their　practical　applications.　Herein,　a　facile　and　mild　strategy　for　rapid　gelation　is　proposed　that　accelerates　polymerization　by　generating　reactive　oxygen　radicals　via　electron　transfer　based　on　the　excitation　of　ferric　phytate　ligands　under　UV　irradiation,　which　takes　only　17　s　to　initiate.　Interestingly,　the　introduced　phytic　acid　imparts　the　hydrogel　excellent　electrical　conductivity　(12　ms/cm),　frost　resistance　(-　31celcius)　and　improves　tensile　properties　(elongation　at　break　1299　%).　The　hydrogel　that　combines　the　above　merits　inspires　the　construction　of　strain　sensor　for　monitoring　physiological　activity　of　low-temperature　environments.　This　study　provides　a　simple　and　universal　approach　for　the　rapid　preparation　of　antifreeze　hydrogels　and　reinforces　the　focus　on　sustainable　and　high-value　utilization　of　phytic　acid　in　advanced　applications.