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Ti-1023 titanium alloy has attracted considerable attentions as aircraft structural material because of its high speci?c strength, good fracture toughness, and excellent stress corrosion resistance and enhanced processing characteristics. However, the shortcoming in Fe element segregation in large specification ingot retarded its practical application. Magnetic filed can be used in overcoming this deficiency at certain degree. In this paper, The influence of magnetic filed on the solidification macrostructure and Fe content of Ti-1023 under vacuum arc remelting was investigated．The results show that when the Magnetic filed T (T=10Gs, T=30Gs) the solidified microstructure is composed of bulky columnar crystal, small bamboo-like columnar crystal and equiaxed grains. When the Magnetic filed T=20Gsthe solidified microstructure is completely composed of bulky columnar crystal and equiaxed grains. The law of Fe segregation abide by normal segregation ,Fe content increases gradually from the bottom to the top of ingots along axial direction and the degree of macro segregation is greater in the radial direction in the middle of the ingot versus the top and bottom., The macrosegregation rate of Fe element increases ?rstly and then decreases with different Magnetic filed.