The effect of ginseng saponin on the activities of isocitrate lyase, palate synthase, succinate dehydrogenase, malate dehydrogenase and lipase have been investigated at the early phase of germinating soy-bean sprout and found that all the above enzymes were stimulated when the bean was rinsed for 24 hours with 10-4% saponin solution. The length of the saponin treated group was not longer than that of control group but the weight of the former was heavier (15%) than the latter. Total sugar content of test group was always much higher than that of control. From the above results, it was concluded that ginseng saponin might stimulate several enzymes of Soybean sprout during germination resulting in rapid growth of the Soybean sprout.