Preparation method of ginkgo leaf extract tablet containing no polar materials

The invention relates to a preparation method of a ginkgo leaf extract tablet containing no polar materials, and belongs to the field of ginkgo extract processing. The ginkgo extract mainly comprises flavonoids and terpene lactones. The preparation method is capable of solving problems of the prior art that cost is high because a single extract is often used for mixing, and polar material impurity content is too high because targeted impurity removing is not carried out. The preparation method comprises following steps: the ginkgo leaf extract is obtained via solvent extraction; chlorophyll, flavonoids, and ginkgoic acid are processed via macroporous resin adsorption; an obtained product is subjected to silica gel column chromatography; and an ginkgo leaf extracted material is mixed with auxiliary materials for tabletting when the content of the polar materials is lower than a detection limit.