It is intended to provide a collagen production promoter, which is inexpensive, safe and effective in improving skin aging, skin roughness and the like, and a food and drink product for cosmetic purposes, a drug product, etc. The collagen production promoter, characterized by containing as an active ingredient, a glycerophospholipid, particularly a glycerophospholipid which is phosphatidylcholine, lysophosphatidylcholine, phosphatidylserine, lysophosphatidylserine, phosphatidylethanolamine, lysophosphatidylethanolamine, phosphatidylinositol, lysophosphatidylinositol, phosphatidic acid, lysophosphatidic acid, phosphatidylglycerol or lysophosphatidylglycerol and has an unsaturated fatty acid as part of its structure.
