The new technical conditions for the preparation of Ginkgo biloba extract were studied. The leaves of G.biloba wereextracted with petroleum ether and then 80% ethanol under reflux. The concentrated extract was treated with water, clarified andthen filtred. The necessary components in the filtrate were adsorbed on macro reticular resin, and eluated with 75% ethanol. Thealcoholic eluate after concentration, was spray dried and the final G.biloba extract was given with a flavonoid content>24% anda lactone cont...