Ionic　conducting　hydrogel　acted　as　a　promising　candidate　in　flexible　electronic　device,　however,　the　intrinsic　properties　of　weak　mechanical　strength,　conductivity　and　environmental　instability　still　are　the　challenging　task.　Herein,　an　assembled　polysaccharide　network　(acetylated　distarch　phosphate)　regulated　polyvinyl　alcohol　(PVA/ADSP)　hydrogel　is　fabricated　via　one-step　freeze–thaw　method,　the　stress,　elongation　at　break,　elastic　modulus,　and　toughness　could　reach　2.26　MPa,　818.60　%,　0.95　MPa,　and　12.23　kJ/m3,　respectively.　At　the　same　time,　the　binary　solution　interlocked　structure　and　salt　are　introduced　into　the　PVA/ADSP　hydrogel　realizing　the　great　environmental　stability　(water-retention　and　anti-freezing)　and　conductivity　(3.59　S/m).　PVA/ADSP　hydrogel　act　as　strain　sensor　presenting　the　great　responsibility　(128　ms),　strain　sensitivity　(GF=1.82　at　350–500　%　of　strain)　and　durability.　On　account　of　the　excellent　sensing　characteristics,　the　PVA/ADSP　hydrogel　could　reliably,　accurately　and　consistently　detect　most　of　human　exercises　and　subtle　physiological　activities　(electrocardiography)　in　real-time.　Moreover,　PVA/ADSP　hydrogel　is　also　utilized　to　control　robotic　hand　realizing　the　human–machine　interaction.　This　work　provides　a　novelty　regulated　approach　for　conducting　hydrogel　via　self-assembled　polysaccharide　network,　which　contributes　to　the　innovative　advancement　of　flexible　wearable　electronics.　©　2024　Elsevier　B.V.