The present invention addresses the problem of providing a brain function-improving composition for newborns, particularly newborns who are just after birth. According to the present invention, a brain function-improving agent for newborns is provided, which comprises a lactic acid bacterium and/or a bifidobacterium. When a brain function-improving agent for newborns or a brain function-improving composition for newborns according to the present invention is used, it becomes possible to improve the developmental quotient without causing any adverse side effects. This use is advantageous from the viewpoint of the effective development and growing of newborns.本發明係以提供一種以新生兒為對象，特別是以剛出生後的新生兒為對象的腦功能改善劑為目的。根據本發明，可提供含有乳酸菌以及/或雙歧桿菌屬菌之以新生兒為對象的腦功能改善劑。藉由使用本發明之以新生兒為對象的腦功能改善劑或腦功能改善用組成物，可於無副作用的狀態提高發展商數，自可有效促進新生兒發育、成長之觀點，亦有其價值所在。
