Disclosed embodiment provides a kind of for improving a lung, the mature method of brain or both, in a baby. Method include step facilitate one trophic component of baby include with 10% to 75% hydrolysis degree a protein. Also disclose a kind of method for reducing the incidence of necrotizing enterocolitis in individual. In addition, the disclosed embodiment provides a kind of for it is characterized in that prevention of the ischaemic to the dyshaemia of brain or lung, delay of progression, or the method for the treatment of.