Tea beverage refers to tea soup made by soaking, extracting, filtering and clarifying tea leaves, or products made by adding water, sugar solution, sour agent, edible essence, fruit juice or plant (grain) extract into tea soup. Tea beverage refers to a beverage made of tea extract, tea powder and concentrated solution as the main raw materials. It has the unique flavor of tea, contains natural tea polyphenols, caffeine and other effective components of tea, and has dual effects of nutrition and health care. It is a multifunctional drink for cooling and quenching thirst.