By measuring the antioxidant of sauce residue polypeptide and its MPRS, under the conditions of different DH, conclusion as follow: with concentration increasing, antioxidant both enhanced; DPPH· clearance was not linear with DH; when DH<14.2%, the·OH clearance decreased with the increase of DH; the changing trend of the deoxidization capacity was different , when DH>12.2%, the deoxidization capacity of the sauce residue polypeptide decreased when the DH increased, DH>8.2%,the deoxidization capacity of MRPS was increased the same as DH; Compared with other polypeptides and MPRS, sauce residue polypeptide and its MPRS had high antioxidant and good appropriate value.