The effect of the Ginkgoic acid on the amounts of total cholesterol and triglycerides in serum from rabbit was observed. Ginkgoic acid was obtained from Ginkgo biloba L. fruits, and it was subcutaneously administered to the three days fasted rabbits. After three days starvation, the amounts of total cholesteral and triglycerides in serum of the rabbit were markedly increased. The increased amounts of total cholesteral and triglycerides were gradually decreased by administration of Ginkgoic acid, and were returned to the control levels after 4 days. According to the above results, it would be concluded that Ginkgoic acid influences for the recovery of the increased amounts of total cholesterol and triglycerides by abnormal metabolism to normal on rabbit.