PROBLEM TO BE SOLVED : To enhance collagen production-promoting effect of collagen peptide, and to provide compositions that have a high collagen production promoting effect and are useful in a food field or a cosmetic and medical field.SOLUTION : By using collagen peptide in combination with Candida utilis-derived glucosylceramide, a collagen production effect is enhanced synergistically. A collagen production-promoting composition that contains collagen peptide and Candida utilis-derived glucosylceramide can be used for food and drinks, cosmetics, and the like.SELECTED DRAWING : None