Aging, which is necessary process of any living things on organs and physiological functions, engenders gradual and irreversible degeneration disorders following age rising. Recently, there are some improvements on the health surroundings and medical systems and that increase the average life span in Taiwan. It is now the most important topic to postpone or resist the aging in the future. The free radical theory is frequently used to explore the aging. Following the free radical experimental tests, we could realize some Chinese herbal medicines, which could scavenge the free radicals or promote the antioxidant defence system in human beings.