The invention relates to a composition for improving cerebral neurotrophic function. The composition comprises, by weight, 91.1-99.8% of asparagus extract, 0-2.4% of phosphatidylserine, 0-2.4% of fungal extract, 0.09-1.6% of theanine and 0.09-2.0% of gamma-aminobutyric acid. The asparagus extract is solid powder or liquid, and refers to the extract, with asparagus saponin content not less than 0.3g / 100g, extracted from one or multiple of asparagus stems, leaves or leftovers; the fungal extract refers to the extract from one or multiple of shiitake mushroom, glossy ganoderma, hericium erinaceus, pleurotus cornucopiae and pleurotus eryngii; extraction solvents of the asparagus extract and the fungal extract both refer to water or mixture of ethyl alcohol and water. The composition can promote growth of the brain derived neurotrphic factor by increasing content of hippocampus acetyl choline, improve mechanisms such as neurotrophic growth factor gene expression, and play a role in improving the cerebral neurotrophic function.