In　this　paper,　we　design　a　micro　gripper　which　is　widely　used　in　the　microscopic　world,　using　a　flexible　object　with　tens　of　micrometers　in　diameter　as　object　studied.　Different　system　structure　models　is　established,　and　the　optimal　structure　is　explored　in　different　materials　and　different　structures.　The　mesh　is　added,　the　constraints　are　added,　and　the　equivalent　stress　and　equivalent　deformation　data　are　collected　by　applying　different　load.　The　data　is　reconstructed　by　Matlab.　The　results　show　that　the　Clamp　1　using　stainless　steel　can　meet　the　last　requirement　considering　different　materials,　comprehensive　equivalent　stress,　deformation,　yield　limit,　elastic　modulus　and　other　factors.