Green tea retains more natural substances in fresh leaves. More than 85% of tea polyphenols and caffeine are retained in fresh leaves, and about 50% of chlorophyll is retained, with less vitamin loss, thus forming the characteristics of green tea soup with clear color, fresh taste and strong convergence. The results of scientific research show that the natural substances retained in green tea have the functions of anti-aging, anti-cancer, sterilization and anti-inflammation, and are suitable for young people, computer workers and people who smoke and drink.