The effect of electro-pulsing treatment (EPT) with different peak current densities (J_m) on tensile properties of selective laser melting (SLM)-produced TC4 alloy was investigated for significant improvement in the tensile properties of the alloy. When J_m is 30 A/mm², the elongation is improved distinctly by 19.72% while the ultimate tensile strength remains nearly constant. The improved ductility is evidenced by deeper dimples on the fracture surface and cracks from the shear lip zone. Additionally, the improvement is reflected by widely distributed voids and prominent slip bands in the longitudinal section of the fracture. The fracture behavior is attributed to the increased high-angle grain boundaries fraction and the reduced dislocation density induced by the appropriate EPT. This microstructure leads to a decrease in texture intensity of the basal plane and an enhancement in crystalline slip capacity of the plane, consequently, the improved plastic deformation capacity of the alloy.