Tea is a good drink that is good for human health. About half of the world people love tea. The reason why tea is regarded as a healthy drink by people is because tea contains a lot of beneficial substances, such as tea, tea tannin, aromatic oil and vitamin C. Therefore, tea can refresh people's minds, improve their minds, resolve the heat, relieve the heat, and ease urination. Especially in today's tea, tea has three major functions that other beverages do not have, namely cancer prevention, cardiovascular disease prevention and radiation protection. In particular, green tea contains more tea polyphenols and is absorbed by the body to combine with carcinogens to decompose them and reduce the carcinogenic activity, thereby inhibiting the growth of cancer cells. Chemical analysis and clinical trials have shown that the active ingredients contained in green tea can slow the reproduction of leukemia virus and human immunodeficiency virus (AIDS). Experts believe that green tea has so far been identified as the most effective natural antidote to cancer, and tannic acid in green tea can prevent cancer cells from sticking to healthy cells, so it can reduce the spread of cancer. Therefore, drinking tea has become more and more popular. First, the classification of tea by tea processing methods are divided into six categories: black tea: such as blush, blush and so on. Green tea: West Lake Longjing, Huangshan Maofeng and so on. White tea: White peony, Gongmei and so on. Yellow tea: Junshan Yinzhen, Huoshan Huangda Tea and so on. Black Tea: Six Fort Fortress Tea, Fuzhuan Tea, etc. Green tea: (also known as oolong tea) Tieguanyin, narcissus and so on. According to the export of tea is divided into six categories: black tea, green tea, oolong tea, flower tea, white tea, pressed tea. Second, the choice of water for tea water is natural water and artificial water treatment. Natural water includes spring water, river water, well water and sky water, and artificially treated water has tap water. Distilled water, non-ionized water. The difference in dissolved substances contained in various waters has a great influence on the quality of tea soup. Spring water is the best spring tea that flows out slowly from the mountain, followed by river water, well water, and rainwater. Generally autumn rain is on. After the plum rain, the thunderstorm was the worst. Third, the tea on the water temperature requirements General tea water temperature reaches the boiling blistering degree, the water temperature standard is about 90 °C. IV. Preservation of tea If tea is bought back, if it is not properly preserved, it will affect the quality of the tea itself to a great extent. Generally, the moisture content of the tea is less than 5%, and it is more resistant to preservation. The dried tea is kept in a closed container to maintain the color and flavor of the tea for a long time. If the tea is placed in direct sunlight, the dry tea is likely to change color and affect the taste. The more upscale green tea and flower tea are more sensitive to light. Temperature is also very important for the preservation of tea, tea is easy to keep at low temperature, generally 0-5 °C is more appropriate. Tea is unstable and changeable at room temperature. Fifth, different seasons should drink different tea in spring more dry tea should drink, you can thirst and detoxify. The summer weather is sultry. At this time, drinking green tea can also be used to drink cold tea. After adding green tea, add appropriate amount of ice cubes to the green tea and drink fresh, refreshing and refreshing. The autumn season is cool, but it is cool in the morning and evening. This drinkable oolong tea can also drink tea. In the winter cold and cold abnormalities, drinking black tea can play the role of warming the bones to the cold and refreshing. What tea to drink in different seasons should also be based on personal habits and physical conditions. Six, tea and health tea can be excited nervous center, eliminate fatigue, sleep less thinking. Drinking tea can be supplemented with various vitamins to improve the quality of human health. Drinking tea can promote food absorption and metabolism, increase the level of human minerals, and regulate glucose metabolism in the human body to treat diabetes. Drinking tea can diuretic and enhance renal excretion. Drinking tea can prevent aging and prevent coronary heart disease. Drinking tea can improve eyesight, reduce inflammation, detoxify, resist radiation damage, and fight cancer.