The invention relates to a crude selenium residue wet feed vacuum smelting equipment, and belongs to the technical field of metallurgy technology engineering. The wet feed vacuum smelting equipment is composed of a temperature control device, a smelting device, a feeding device, a discharging device, a stirring device, a condensing device and a vacuum system, wherein all the devices are sealed and connected to guarantee the whole equipment has sealing bearing performance. The smelting device comprises a smelting crucible, a furnace cover and a stirring device, the smelting crucible is connected to the furnace cover through a flange, the outer wall of the smelting crucible is provided with a layer of heating element, and the temperature in the smelting crucible is controlled by appliance control systems of the heating device and the temperature control device; the upper portion of the furnace cover is provided with the feeding device capable of regularly, quantitatively and continuously conducting feeding and the stirring device which is placed inside the smelting crucible for stirring a melt, the upper portion of the furnace cover is provided with a gas guide opening, and the smelting device is communicated with the condensing device through a gas guide pipe; the discharging device is arranged at the outer side of the lower portion of the smelting crucible, and comprises a discharging pipe and a discharging valve; the condensing device is composed of a gas guide pipe, a baffle, a safety valve, a deflating valve, a gas pumping opening and a drainage valve; the vacuum system comprises a water ring pump and a gas pumping pipeline, and is connected to the condensing device through the gas pumping opening.