Abstract: Due to the high alloying degree and difficult processing characteristics of Inconel 718 alloy, the traditional hot processing methods have shortcomings such as low efficiency and high cost. However, the use of pulse current assistance can efficiently regulate its microstructure and formability. The electrical tensile test of Inconel 718 alloy was carried out under a tensile rate of 0.5 mm/min, and the effects of pulse voltage and pulse frequency on the microstructure and tensile properties of Inconel 718 alloy were investigated. The results show that the tensile strength decreases with the increase of pulse voltage or pulse frequency.The Inconel 718 alloy experiences dynamic recrystallization during the electrical tensile process, which reduces the tensile deformation resistance of the alloy, and the driving force of grain boundaries decreases with the increase of pulse current intensity, resulting in a decrease in the growth rate of recrystallized grains and inhibition of their growth.