Disclosed is a collagen production enhancer, which comprises an enzymatically decomposed product of swallow's nest as an active ingredient. Specifically disclosed are: an excellent type-I collagen production enhancer which can be produced with high efficiency and is highly safe; and an external preparation and a cosmetic, each of which comprises the type-I collagen production enhancer.本發明之膠原蛋白產生促進劑係以燕窩之酵素分解物作為有效成分。依據本發明,即可有效率地生產,並提供安全性較高之優異I型膠原蛋白之產生促進劑,以及包含該促進劑之外用劑及化粧品。