Abstract: Titanium alloy is well known with difficult machinability, which limits its application in many fields unavoidably. In the current study, electric pulse treatment(EPT) was firstly employed to treatment the titanium alloy. The microstructure and mechanical properties had been changed after the treatment. It is found that EPT technology can improve plasticity of titanium alloy, and the hardness, elasticity modulus and yield stress of titanium alloy will decrease after EPT. The result of cutting test proves that the EPT can decrease the cutting force and improve the surface quality.