The invention relates to a molten drop control device (1) for a vacuum consumable electro-arc furnace. The molten drop control device (1) comprises a signal detection unit (2), a signal processing unit (3), a communication unit (4) and a control unit (5). According to the molten drop control device for the vacuum consumable electro-arc furnace, the number and size of metal molten drops of a multi-component alloy in the vacuum state can be elaborately controlled, an alloy ingot even in microcosmic metallographic phase distribution and free of segregation, air holes, cracks and inclusions is manufactured, and the alloy smelting density is ensured.