Abstract: The effect of vanadium on the magnetic properties of oriented electric steel was studied by testing and analyzing the iron loss P₁₇ and magnetic induction B₈ of the samples,with adding different content of vanadium in oriented electric steels.The results show that the average grain size and the iron loss P₁₇ of the oriented electric steel first decrease then increase while the texture grade and magnetic induction B₈ of the steel first increase then decrease with the magnetic properties of the steel improved first then declined,when the content of vanadium increases from 0.000% to 0.022%.The magnetic properties of the oriented electric steel will be deteriorated with more than 0.020% of vanadium content.The content of vanadium was optimized at 0.008%,and the average grain size and the iron loss P₁₇ of the steel respectively decreased by 14.29% and 15.32% while the texture grade and magnetic induction B₈ of the steel separately increased by 267.15% and 13.09%,comparing with those of vanadium-absence steel.