As　an　excellent　model　material　for　fundamental　studies　on　temperature-sensitive　hydrogels,　poly(N-isopropylacrylamide)　(NIPA)　hydrogel　has　been　applied　in　drug　delivery,　tissue　engineering,　and　soft　robotics.　However,　the　lack　of　study　on　fracture　and　fatigue　hinders　further　development　of　hydrogels　for　applications　where　cyclic　loading-unloading　is　unavoidable.　In　this　study,　the　fracture　and　fatigue　damage　of　the　NIPA　hydrogel　were　studied　for　the　first　time　by　pure　shear　tests　at　different　temperatures.　Fracture　behaviors　were　investigated　under　monotonic　load　from　31　degrees　C　to　39　degrees　C.　It　is　found　that　the　fracture　energy　increases　with　the　increase　in　temperature.　The　fracture　energy　is　approximately　20　J　m(-2)　near　the　volume　phase　transition　temperature.　Temperature　also　significantly　influences　the　fatigue　life.　By　fitting　the　experimental　data,　the　fatigue　limit　(f)　is　determined.　The　results　obtained　from　the　experimental　tests　would　be　important　for　the　engineering　applications　of　the　NIPA　hydrogels.