The invention discloses a method for co-producing TC4 titanium alloy round ingots/flat ingots through a VAR furnace and a 7-gun cold cathode EB furnace. The method comprises the following steps of: averaging within a component range stipulated by the national standards as a datum value; increasing a datum value of an element Al and reducing a datum value of an element V, and then, taking the elements Al and V as proportioning components of brinqueting batch; covering alloy package in proportion, pressing sponge titanium and alloy package into an electrode block, and adopting a plasma welding machine to weld the electrode block into a long electrode; and smelting the long electrode into primary cast ingot through the VAR furnace, and performing secondary smelting on the primary ingot smelted by the VAR furnace through the 7-gun cold cathode EB furnace, thereby obtaining very-large-scale high-quality TC4 titanium alloy round ingots/flat ingots. The method is convenient to operate, can realize control on elements aluminum and vanadium, can greatly improve stability of the elements aluminum and vanadium in cast ingots of the TC4 titanium alloy, and further improves quality of the conventional TC4 titanium alloy product, so that the product obtains good market competition ability.
