The content of angiogenin in human milk and dairy produce for feeding of children of the first year of life is investigated. It is revealed, that the highest concentration of angiogenin in human milk takes place in colostric period (18.00 +/- 0.72 mg/l). During the subsequent time of lactation the concentration of angiogenin keeps at a level 2.00 +/- 0.06 mg/l. In products of infant's feeding the angiogenin either was absent, or its concentration was much lower, than in breast milk.