Abstract:The main constituents of pea residue were analyzed，and the adsorption properties of insoluble dietary fiber were determined through oil，cationic，cholate and NO2-respectively.The results showed that water holding capacity，swelling capacity and oil retention capacity of pea dietary fiber were 9.84 g/g，9.4 mL/g，2.36 g/g，respectively；it also showed that the adsorption rate reached 80.25%when adding 4 g pea residue dietary fiber to 100 mL cholate solution；and the adsorption capacity of NO2-decreases with the increasing of the environment pH，when pH=2，the maximum adsorption capacity of NO2-could reach to 10.45 μg/g in 100 min.