PURPOSE: A composition for improving collagen synthesis including collagen hydrolysate, protein hydrolysate, vitamin, and mineral is provided to improve bioavailability, safety, and skin regeneration effect. CONSTITUTION: A composition for improving collagen synthesis comprises collagen hydrolysate, protein hydrolysate, vitamin, and mineral. The collagen hydrolysate comprises collagen peptide. An average molecular weight of the collagen hydrolysate is 1000Da or less. The collagen hydrolysate is obtained either from mammal or fishes. The protein hydrolysate comprises glutamine or glutamine peptide. The vitamin comprises vitamin C. The mineral comprises calcium. The composition comprises 50-95 weight% of collagen hydrolysate, 4-50 weight% of protein hydrolysate, 0.1-30 weight% of vitamin, and 0.1-30 weight% of mineral based on composition total weight. Cosmetic compositions for prevention of skin aging, improvement and prevention of skin wrinkle, wound healing, or skin texture restoration and regeneration include the composition for improving collagen synthesis as the active ingredient.본 발명은 콜라겐 가수 분해물, 단백질 가수 분해물, 비타민 및 미네랄을 포함하는 콜라겐 합성 촉진용 조성물을 개시한다. 상기 조성물은 체내 흡수율이 뛰어날 뿐만 아니라 안전성 또한 우수한 특성을 지닌다. 또한 본 발명은 상기 조성물을 유효 성분으로 포함하는 피부 노화 방지, 피부 주름 예방 및 개선, 상처 치유 또는 피부 조직 수복 및 재생용 조성물을 개시한다.