The experiment was conducted to investigate the change of xanthophyll content with different drying methods and the ethoxyquin treatment in the laboratory, for the purpose of determing whether the pigment in Satsuma Mandrin peel would be worth of being considered as a supplement of livestock feeds in the future. The flavedo, the outer layers of Satsuma Mandrin peel, was prepared in the laboratory, and 0.01,5% of ethoxyquin was used in this study. The results obtained are summarized as follows: 1. The xanthophyll content in fresh Satsuma Mandrin peel was 397.22 ㎎ per Kg. on dry matter basis. The content in both sun-cured and shadow-cured peels linearly decreased as the drying period proceeded. But the reduction in the sun-cured sample was greater than that in the shadow-cured. The xanthophyll losses on 9th day of drying were 50.2% in the sun-cured and 35.6% in the shadow-cured. 2. The xanthophyll losses during drying in the airforced oven increased with the lapse of drying time. The xanthophyll destruction was greater in 100℃ temperature as compared to 50℃, and a rapid destruction was shown in 3-hour of drying. The losses of xanthophyll in 3 and 24 hours of drying were 32.0 and 57.6% at 50℃, and 45.8 and 61.7% at 100℃, respectively. 3. The ethoxyquin treatment prior to drying prevented xanthophyll destruction of fresh peel for 15-day storage at both 4℃ and 30℃. Storage at 4℃ was less destructive than at 30℃, but the effect of ethoxyquin treatment was more prominent at storage temperature of 30℃ than 4℃. 4. The results suggest that Satsuma Mandrin Peel can be used as a pigmentation source of broiler ar layer ration. But studies on xanthophyll components, industrial drying method and storage conditions are required prior to commercial application.