Sleep composition for improving

An object of the present invention, there is no fear of side effects, everyone with confidence is to provide a sleep-improving composition comprising a routinely usable theanine and other ingredients. This object is achieved, at least one selected from the group consisting of (a) theanine and, (b) chamomile, lavender, Saint John's word, kawakawa, valerian, passion flower, tryptophan, .gamma.-aminobutyric acid, serotonin, melatonin, and cedrol One or more of which contains the component can be achieved by improving sleep composition characterized.