To　safely　and　reliably　use　aluminum　nitride　(AlN)　helices　in　the　fabrication　of　novel　micro/nanodevices,　it　is　very　important　to　know　their　mechanical　properties.　Herein,　we　investigate　the　mechanical　properties　of　individual　AlN　helices　using　an　in　situ　tensile-bending　test.　Tensile　tests　reveal　that　an　AlN　helix　has　an　average　epsilon　of　similar　to　4.7　+/-　0.8%　elastic　deformation　before　a　typical　brittle　fracture　occurs.　The　bending　test　shows　a　two-step　mechanical　feature-linear-elastic　followed　by　an　elastic-plastic　process-with　an　average　epsilon(bent)　of　similar　to　54.5　+/-　0.6%.　Our　results　provide　direct　cognition　about　the　mechanical　properties　of　AlN　helices　and　their　benefit　to　the　design　of　AlN-based　flexible　micro/nanodevices.