Tea is closely related to health, and its anti-aging effect has long been recognized by ancient Chinese through observation and practice. It has long been recorded in Shennong Food Classic that "long service makes people strong and feel comfortable" and in Zalu that "bitter tea makes people strong and bones change". Modern research has confirmed that tea contains essential chemical components for human body and effective substances for some diseases. Although the daily intake of tea is very small, these substances can be supplemented frequently, which can play a role in nutrition and health care for the human body. Therefore, it is worthy of the name that tea is called a natural health drink.