The　rapid　development　of　human-machine　interface　technologies　is　dependent　on　flexible　and　wearable　soft　devices　such　as　sensors　and　energy　storage　systems.　One　of　the　key　factors　for　these　devices　is　the　hydrogel　electrolyte.　In　this　work,　firstly　we　constructed　an　anti-freezing,　self-healing,　adhesive　and　tough　conductive　double　network　ionic　organohydrogel　by　simultaneously　introducing　NaCl　and　glycerol　(Gly)　into　poly(vinyl　alcohol)/poly(acrylic　amide-acrylic　acid)　(PVA/PAMAA).　Then,　based　on　this　organohydrogel,　a　strain　sensor　and　a　flexible　all-solid-state　supercapacitor　were　assembled　separately　and　their　properties　were　measured.　The　fabricated　strain　sensor　showed　a　highly　sensitive　response　(gauge　factor　=　8.303)　in　a　broad　strain　range　(from　500　to　1000%),　enabling　the　accurate　and　reliable　detection　of　various　mechanical　deformations.　Meanwhile,　the　flexible　all-solid-state　supercapacitor　demonstrated　a　specific　capacitance　of　75.75　mF　cm-2,　high　cycling　stability　(90.2%　retention　rate　after　5000　cycles)　and　excellent　mechanical　stability.　Lastly,　a　self-powered　integrated　system　composed　of　the　strain　sensor　and　flexible　all-solid-state　supercapacitor　was　fabricated.　The　sensor　can　be　driven　by　the　supercapacitor　and　operate　stably　in　a　wide　strain　range　sensing　test　with　low　power　consumption.　More　importantly,　the　self-powered　integrated　system　could　be　directly　attached　to　the　human　body　to　detect　human　motions,　showing　its　great　potential　application　in　wearable　devices.　This　work　would　enlarge　the　research　and　application　of　high-performance　ionic　hydrogel　electrolytes.　©　The　Royal　Society　of　Chemistry.