Rice protein was hydrolyzed by alcalase for preparing antihypertensive peptides, and the end point of alcalase hydrolysis was DH 18.17%. Nine kinds of macroporous adsorbed resins were utilized to adsorb antihypertensive peptides from rice protein. Results show that NKA resin has the best adsorption behavior, and the content of ash of antihypertensive peptides decreases from 16.64% to 2.32%. The relative molecular weight and solubility of antihypertensive peptides were analyzed, the result shows that the relative molecular weight of antihypertensive peptides mainly distributes from 138 to 1461,...