The invention provides a natural plant health care product capable of calming heart, refreshing mind, tonifying brain and improving intellectual development and a preparation method thereof. The health care product at least comprises the following raw materials in parts by weight: 20-200 parts of soybean, 20-200 parts of mung bean, 20-200 parts of wheat, 10-100 parts of Chinese dates, 10-100 parts of spina date seeds, 5-60 parts of lucid ganoderma and 5-30 parts of liquorice. The preparation method thereof comprises the following steps: washing the raw materials clean, denucleating, slicing, drying, heating slightly, crashing, poaching, filtering and concentrating; extracting with ethanol to obtain an extracting solution; and preparing the extracting solution into various preparations of the natural plant health care product. The health care product has the efficacies of calming the heart, tranquilizing the mind, nourishing the heart, refreshing the mind, tonifying the brain, improving the intellectual development, stabilizing emotion, replenishing heart and brain nutrition, improving and consolidating memory and the like, thus realizing the purposes of cheering spirits, concentrating attention and overcoming the difficulties and obstacles in sleep, learning and examinations caused by psychological, spiritual and physical problems; and the health care product does not contain any hormone and stimulant, and has no toxic and side effects and dependence.