Abstract: Yunnan has more than sixty sugar refineries where plenty aleohol is made from the by-product-molasses in sugar-making process. However there is little perfume, but lots of impurities in the alcohol because lots of higher fatty acid which is insoluble in water makes the alcohol turbid after its dilution. Through the absorption of active carbon, oxidation of manganese salt and fractional distillation, the impurities and unsavoury smell are gathered at the bottom of the container. The residues are about 2-3% of the total. The pure and clear base of wine can be added with any perfume people like. By doing so, it is not only beneficial to the health of the people, but lots of grain can be saved.