Abstract: OBJECTIVE To compare the content of the total flavonoids, favonoid aglycones and terpene lactones in six companies’ Ginkgo tablet and Ginkgo biloba L. tablet and two companies’ Ginkgo biloba extract and Ginkgo biloba L. for evaluation the quality of two preparations; and then analyze the pharmaceutical economics of two preparations. METHODS According to the crossover trial, the total flavonoids of two preparations and raw materials were detected by UV, and the favonoid aglycones and terpene lactones were detected by HPLC. RESULTS All the content of the total flavonoids, favonoid aglycones and terpene lactones in two preparations and raw materials had no significant differences, but from the payment for single day, Ginkgo tablet was more suitable for patients. CONCLUSION Ginkgo tablet is better than Ginkgo biloba L. tablet in the treatment of chronic diseases.