To supply the ginkgo biloba extract which contains no ginkgolic acid but the active ingredient of existing ginkgo biloba extract and which achieves significant effects in activation of the brain cells. The composition comprises nanoparticle ginkgo biloba extract as the active ingredient, which has the effect of brain function activation. The ginkgo biloba extract is free of ginkgolic acid and is made with the breakdown method, the combination of dry and wet process, crushing ginkgo biloba extract powder. The nanoparticle is 100 nm and below. The above composition has the form from the group consisting of condiments, food additives, food materials, food and drink, health food and drink, drugs, quasi drugs and feeding stuffs. The above health food and drink is for patients with abnormality in cerebral blood flow and metabolism and with the effect of brain function activation prevents or improves the symptom. The above drugs and quasi drugs are intended for human or animal use.
