Utilizability of citrus pulp and it`s effect on cholesterol metabolism was studied in chicks. The neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents were analysed in the experimental, materials and residues (cellulosics) of excreta from birds fed diets contained wheat bran, citrus pulp, acetone extracted (AE) citrus pulp and ultrasonically treated (UT) citrus pulp. Cholesterol deposition in carcass and steroids excretion in excreta of birds fed diets contained cellulose (cotton meal), wheat bran, citrus pulp, citrus pulp-AE and citrus pulp-UT were investigated. The contents of NDP and ADP of experimental materials generally were lower than those of the residues from excreta of buds fed diets containing experimental materials. It seemed to be originated from the decrease of cell contents of the materials in the residues by digestion in the digestive tract of the chicks. The digestibility of cell contents in wheat bran, citrus pulp and citrus pulp-UT reached to 60.9, 59.7 and 49.9io, respectively, which was low comparing to 75.5% in citrus pulp-AE. Carcass of buds contained 456-460㎎ of cholesterol in the initial stage of experimental feeding, while chicks fed cellulose, wheat bran, citrus pulp, citrus pulp-AE and citrus pulp-UT had diposited 45.5, 48.7, 46.4, 67.9 and 61.7㎎, respectively, per day during 10 days of experimental feeding. Thus birds fed citrus pulp-AE accumulated significantly more cholesterol compared with those of citrus pulp. When birds were fed with cellulose, citurs pulp-AE and citrus pulp-UT, cholesterol accumulation per metabolic body size (㎏^(0.75)) correlated negatively with steroids excretion per ㎏^(0.75) in excreta while those values in birds fed wheat bran and citrus pulp were shown different trend. Cholesterol deposition per ㎏^(0.75) of birds fed cellulose, citrus pulp-AE and citrus pulp-UT correlated positively with the retention of protein and lipids per ㎏^(0.75). Birds fed wheat bran and citrus pulp contained relatively constant values though the levels of protein and lipids were changed. It was supposed that the effect of acetone extracted and ultrasonically treated citrus pulp on the metabolism of cholesterol in chicks will be different with those of wheat bran and citrus pulp.