Abstract: A new generation of scarification equipment-DYBH-NEN-Ⅱ type NC Electric Spark cutting machine is developed based on the principle of electric spark cutting. The machine is mainly composed of four parts: electrode feeding, vibration system, pulse power, and oil cooling system. In order to verify its experimental results, artificial defects were cut on the flat plate and circular tube specimen artificially. Results verify the following advantages of the equipment: advanced performance, mature technology and stable processing performance, so the cutting machine can etch tiny flaws and meet inspection requirements in every walk of life, such as aviation, nuclear power, railway and pressure vessel.