In　this　paper,　PVA/PAA-PAM-IS/GC　composite　hydrogels　are　prepared　using　polyvinyl　alcohol　(PVA),　poly　acrylic　acid　(PAA),　poly　acrylamide　(PAM),　and　iron　sulfate　hydrate　(IS)　glycerol　(GC).　The　crosslinking　network　is　formed　by　the　coordination　of　carboxyl　groups　with　ions,　which　forms　PVA　with　semi-interpenetrating　network.　The　mechanical　properties　and　self-healing　properties　of　PVA/PAA-PAM-IS/GC　composite　hydrogels　are　excellent.　The　stress,　strain　and　self-healing　efficiency　of　PVA/PAA-PAM-IS/GC　composite　hydrogels　can　reach　840　kPa,　784%,　and　above　95%,　respectively.　The　antifreeze　and　water　retention　properties　of　PVA/PAA-PAM-IS/GC　composite　hydrogels　are　improved　by　glycerol.　PVA/PAA-PAM-IS/GC　composite　hydrogels　remains　flexible　at　low　temperatures　and　moist　for　a　long　time　at　room　temperature.　The　conductivity　of　the　hydrogel　increases　with　the　increase　of　temperature　because　the　interactions　between　glycerol,　water　molecules　and　ammonium　ions　are　affected　by　the　temperature,　the　multifunctional　conductive　hydrogel　can　be　used　in　strain　sensing　and　temperature　sensing.　In　summary,　PVA/PAA-PAM-IS/GC　composite　hydrogels　can　provide　a　guide　in　the　field　of　electronic　intelligence.