Prime purpose of this lecture is to present on Sugar Refining Process in mills. In tropical regions where sugar cane is grown, sugar cane is partially refined into raw sugar at mills operated near the sugar fields. At the mills, the sugar cane is first cut up into small pieces, and then crushed to extract its juice. The juice is clarified by removing most of the impurities (plant fibre and soil, for example). At the refinery; the first step is to remove the thin coat of molasses and residual matter from the raw sugar crystals.