The peptide of the present invention exhibits an anti-obesity effect by inhibiting fat accumulation and decomposing already accumulated fats as well as an outstanding anti-diabetes effect by effectively lowering blood sugar levels. The peptide of the present invention downregulates the expression of the adipogenic markers PPARγ, ACC and/or aP2, upregulates the expression of the lipolytic factors pHSL, AMPK-α1, CGI-58 and/or ATGL, and reduces sizes of adipocyte and levels of cholesterol in blood. The excellent activity and stability of the peptide of the present invention may be very advantageously applied to drugs and quasi-drug products.
