Smart alloy, which is typically called a shape memory alloy (SMA), have wide application in industry such as in aircraft, spacecraft, automotive, robotics, in civil structures, piping, medical field, engines, due to its shape memory effect, biocompatibility, strong resistance against corrosion, anti-fatigue characteristic. In a traditional machining method, physical contact occurs between workpiece and tool (SMA); therefore, increased tool wear and lesser dimensional stability due to pseudo-plasticity occur, which is not feasible. In contrast, different non-traditional machining methods are there, such as electrochemical machining (ECM), water jet machining (WJM), electro discharge machining (EDM), and wire electro-discharge machining (WEDM). The objective of this present work is to find a research gap. Based on the gap in a future new method, results get develop.