Simultaneously　achieving　good　mechanical　properties　and　high　tolerance　to　hot　and　cold　environments　in　hydrogel　materials　remains　a　challenge.　In　this　work,　ethylene　glycol　(EG)　and　cellulose　nanofibrils　(CNFs)　were　introduced　into　chitosan/poly(acrylamide-acrylic　acid)　double-network　hydrogels　to　improve　their　toughness　and　tolerance　to　hot　and　cold　environments.　The　effect　of　EG　and　CNFs　on　the　properties　of　the　hydrogels　was　studied　respectively.　EG　increases　the　tolerance　of　the　hydrogel　to　hot　and　cold　environments.　However,　EG　had　a　negative　effect　on　the　mechanical　properties　of　hydrogels.　In　addition,　CNFs　substantially　enhanced　the　strength　and　toughness　of　the　chitosan/poly(acrylamide-acrylic　acid)/EG　organohydrogels.　Finally,　with　the　cooperative　action　of　EG　and　CNFs,　high-strength　and　tough　organohydrogels　(tensile　strength　=　0.71　MPa,　elongation　at　break　=　787.2%)　with　a　high　tolerance　to　hot　and　cold　environments　(-23　degrees　C　to　60　degrees　C)　were　obtained.　Further,　EG　enabled　the　organohydrogel　to　revert　to　its　original　state　after　drying　at　60　degrees　C.　This　paper　provides　a　new　route　to　prepare　high-strength　and　tough　organohydrogels　with　a　high　tolerance　to　hot　and　cold　environments.