The utility model discloses a corn clear solution separating and purifying device. The corn clear solution separating and purifying device comprises a primary separator (1) used for separating corn clear solution to form primary separation sugar liquor and primary separation mixed liquor and a secondary separator (3) used for separating the primary separation mixed liquor to form secondary separator sugar liquor and secondary separation crude oil, wherein the discharge hole (13) of the primary separator (1) is connected with the feeding hole (31) of the secondary separator (3). The corn clear solution separating and purifying device disclosed by the utility model can separate out excessive oil from clear solution, so that purity of the clear solution is effectively improved, negative impact of oil to citric acid and alcohol fermentation processes is reduced, and quality of a product is further improved; and meanwhile, the extracted oil can be utilized as a byproduct, so that comprehensive utilization ratio of corn is increased and production benefit is increased.