Disclosed are: a growth hormone secretion stimulator which comprises a milk-derived basic protein fraction as an active ingredient and can stimulate the secretion of a growth hormone through the stimulation of the secretion of ghrelin that has an activity of stimulating the secretion of the growth hormone； and a method for stimulating the secretion of ghrelin by using a milk-derived basic protein fraction. The growth hormone secretion stimulator can be ingested on a daily basis and is highly safe to be ingested for a long period.
