The invention relates to a direct reduction carbonization preparation of tungsten carbide or tungsten carbide-metal cobalt ultra-fine powder, wherein it comprises: (1), preparing materials that mixing the tungsten, or the oxidant of tungsten and cobalt with some carbon to be grinded and packed into graphite container; (2), entering it into furnace to react, that pushing the graphite container into reaction furnace to be reacted at reduction gas; (3), drawing it outside the furnace to be checked that the screening the cooled reacted product to be checked about the total carbon, free carbon and oxygen contents, and watching the granularity distribution; (4) adjusting that when the checked result not meets the demand, micro adjusting the carbon or oxidant and grinding and mixing, feeding the container into furnace, to react at reduction gas; screening, checking and packing after cooling and drawing outside the furnace. The invention has high quality, simple device and high efficiency, while it can be used to product the powders at 1 mum, 0.8 mum, 0.6 mum, 0.4 mum, 0.2 mum and 0.1 mum. |