The invention provides a vanadium titanium magnetite treatment device which comprises a rotary kiln, a coal injection device, an electric furnace and a converter. A reaction cavity used for carrying out prereduciton on vanadium titanium magnetite is limited in the rotary kiln, the rotary kiln is provided with a feed inlet for feeding raw materials into the rotary kiln, a roasted ore outlet for discharging roasted ore and an air outlet used for exhausting smoke gas, the oil injection device is arranged on the rotary kiln for injecting fuel into the reaction cavity, the electric furnace is usedfor smelting roasted ore and provided with a roasted ore inlet, a slag outlet, an iron outlet and a smoke outlet, the roasted ore inlet is used for adding roasted ore, titanium slag and vanadium-containing iron water obtained through smelting of the electric furnace are discharged from the slag outlet and the iron outlet, smoke gas in the electric furnace is exhausted from the smoke outlet, the rotary kiln is used for blowing vanadium-containing iron water, the rotary kiln is provided with an adding inlet, a slag discharge outlet and a discharge outlet, the adding inlet is used for adding vanadium-containing iron water drained from the iron outlet, and vanadium slag and semisteel produced through blowing of the rotary kiln are discharged from the slag discharge outlet and the discharge outlet. The vanadium titanium magnetite treatment device is simple in structure, short in flow, low in energy consumption, small in pollution and low in cost.