Ginkgo biloba is the leaves of the ginkgo tree, harvested in the fall, ginkgo biloba is sweet, bitter, astringent and flat, ginkgo biloba is attributed to the heart meridian and the lung meridian. Ginkgo biloba has the effect of astringing the lungs and relieving asthma, activating blood circulation and removing blood stasis, and relieving pain, and it can be used for coughing and wheezing caused by lung deficiency. In addition, ginkgo biloba has a certain effect on lipid metabolism, so it has an effect on hyperlipidemia. Ginkgo biloba in recent years developed a lot of ginkgo extract, it can expand small blood vessels, for microvascular is improved, for improving the state of microcirculation is very favorable, so it is widely used in coronary heart disease, angina pectoris, also used for cerebrovascular disease appeared in small foci of cerebral infarction, are because of its expanding the role of the tube, but there is a real evil patients are avoided to use ginkgo biloba.