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To improve the formability of W-rare earth electrode,the influence of high-energy pulse on the plasticity property of W-CeO2 rods was investigated.The effects of current density (Jo),pulse width (tw),frequency (f),and strain rate on the plasticity of W-CeO2 rods were discussed in detail.Results of tensile tests show that the W-CeO2 rods applied with the electrical pulses obtain a maximum percentage total elongation at fracture (9.65 ％),increased by 118.7 ％ compared to that without pulses.This is owing to both the heat effect and the interaction of current between dislocations and rare earth additions.Electron back scattered diffraction (EBSD)-generated grain boundary (GB) maps suggest that the length of low-angle grain boundaries composed of high-density dislocations decreases after deformation while applying the pulse current.This demonstrates that the short-duration pulsed current enhances the mobility of dislocations.Scanning electron microscopy (SEM) images of the rods after deformation with the pulse current show that the long fiber-shaped additions become discontinuous,which could reduce the stress concentration and hinder the crack propagation.