The invention discloses a sugar manufacture clarification process which comprises the following steps: adding lime milk into mixed cane juice to adjust the pH value to be 7.5-7.8, thereby obtaining lime-milk-added cane juice; filtering the lime-milk-added cane juice by using a horizontal screw centrifuge, thereby obtaining roughly filtered cane juice; heating the roughly filtered cane juice to be 55-65 DEG C, thereby obtaining cane juice which is heated for the first time; stoving the cane juice which is heated for the first time with SO2 until the intensity of sulfitation is 4-6 mL, thereby obtaining stoved cane juice; heating the stoved cane juice to be 80-90 DEG C, thereby obtaining cane juice which is heated for the second time; performing ultrafiltration clarification on the cane juice which is heated for the second time by using a ceramic membrane, thereby obtaining clear cane juice and membrane concentrated liquid; filtering the membrane concentrated liquid by using a plate-and-frame filter press, and returning the filtered membrane concentrated liquid to a roughly filtered cane juice storage tank. As a conventional sugar manufacture clarification process through a sulfurous acid method is combined with a membrane separation technique, a novel sugar manufacture clarification process is developed, the clarified cane juice prepared by using the process is low in color value, high in purity and low in turbidity, and the white sugar prepared from the cane juice is good in quality.