Ginkgo (Ginkgo biloba L.) is a deciduous tree of the Ginkgo family and genus Ginkgo. Ginkgo appeared hundreds of millions of years ago and is the oldest relict plant among the gymnosperms left over after the Quaternary glacial movement. The surviving ginkgos are now rare and scattered, and hundreds of years old trees are rare. All other plants in this class are extinct, so Ginkgo is also known as a living fossil. There are 26 varieties and varieties: yellow-leaf ginkgo, tower-shaped ginkgo, split-leaf ginkgo, weeping ginkgo, and variegated-leaf ginkgo.

The fruit of the ginkgo tree is commonly known as ginkgo, so ginkgo is also called the ginkgo tree. The ginkgo tree grows slowly and has an extremely long life. Under natural conditions, it takes more than 20 years from planting to bearing ginkgo fruits, and it takes 40 years to produce a large number of ginkgo fruits. Therefore, some people call it the "Gongsun tree". The meaning of "Sun Deshi" is the old longevity star in the tree, which has ornamental, economic and medicinal value.