Lecithin is not only the important part of bio-membrane mainly concentrated on cerebrum, nervous system, immune system and heart, liver, kidney, gonad, and other important organs, but also a resource of choline and necessary fatty acid. It is named “Guardian of cell”, “cleaner of blood vessel”, “power to initiate intelligence” and “cosmetics”. It can regulate blood cholesterol, prevents and improves cardio-cerebral disease. It is good for the brain and wisdom. Through nervous conducting substance, it improves memory and prevents senior dementia.