Hydrogels　are　important　materials　for　mechanical　sensors　of　artificial　intelligence,　and　their　good　electrical　conductivity　and　mechanical　properties　have　broad　application　space　in　the　field　of　multifunctional　materials.　However,　it　is　still　a　challenge　to　prepare　hydrogels　with　excellent　conductivity　and　sensing,　anti-freezing　and　water　retention,　resilience　and　fatigue　resistance.　Herein,　chitosan/poly(acrylic　acid-acrylamidesodium　p-styrenesulfonate)/glycerol/samarium　hydrate　(C/P/G/S)　double-network　(DN)　hydrogels　were　prepared　by　Interpenetrating　Polymer　Networks　(IPNs)　of　chitosan　(CS)　with　acrylic　acid　(AA),　acrylamide　(AM),　sodium　p-styrenesulfonate　(SSS),　glycerol　(GL)　and　samarium　hydrate　(SH)　under　ultraviolet　(UV)　light.　The　C/P/G/S　DN　hydrogels　have　satisfactory　mechanical　properties,　conductivity,　mechanical　strain　sensing　performances,　water　retention　and　frost　resistance　capacities.　Specially,　the　compressive　stress　of　hydrogels　at　80%　compressive　strain　is　up　to　1.7　MPa.　It　also　shows　preeminent　fatigue　resistance　and　resilience　in　continuous　cyclic　stretching　and　cyclic　compression　(5　and　100　times).　The　conductivity　of　the　hydrogels　can　reach　1.9　S/m　when　the　SH　is　1.8　g.　Meanwhile,　mechanical　strain　sensing　tests　of　the　hydrogels　at　room　temperature　and　low　temperature　were　also　performed　simultaneously.　The　hydrogels　have　stable　mechanical　strain　sensing　properties　and　good　electrical　conductivity　even　at　−20　°C.　More　importantly,　when　C/P/G/S　DN　hydrogels　were　placed　at　room　temperature　and　ventilated　for　30　days,　the　water　loss　rate　of　hydrogels　was　only　13.9%.　©　2023　Elsevier　B.V.