Abstract
Complicated light curves of the very long-period eclipsing binary UU Cnc (K4III, P=96.7 days) are made with the data obtained in UBV since 1984 at the Yonsei University Observatory. The overall shape of the light curves is Beta Lyr-type which resembles the one given by Eggen (1973) but with a slight deformation. The broad and shallow secondary eclipse seems to have a totality which lasts for about 10 days and is redder in B-V compared to that of the outside eclipse. The characteristics of each component of UU Cnc are discussed.
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