Fuente: WIPO "industrial hemp" The present invention relates to a short-process and zero-drainage production method of refining industrial hemp. The scutched hemp is subjected to drafting, purification and carding processing through a jute garnett and a continuous carding machine and is subjected to one-bath degumming, bleaching and softening processing through a successive cylinder without water drainage; the degumming and thebleaching are performed in the same bath, the bath ratio is 1:5-20, the bleaching temperature in the high-temperature and the high-pressure bleaching cylinder is 98-135 DEG C, and the bleaching holding time is 5-60 minutes; the one-bath processing of the degumming and the bleaching is performed for 2-3 times; the scutched hemp is subjected to degumming and the bleaching, then drying, softening processing through the successive cylinder without water drainage, and microwave drying or low-temperature drying after the softening processing to become a finished product. The whiteness of the refining industrial hemp is larger than 60%, the separation degree of the industrial hemp raw materials below 36 Nms after processing is larger than 1500, and the separation degree of the industrial hemp raw materials above 36 Nms after processing is larger than 2000. The short-process and zero-drainage production method of refining industrial hemp can be directly used for fiber blending such as cotton,tel tencel, modal, mucilage glue and wool to manufacture blended yarns containing hemp.