In terms of nutrition from drinking tea, drinking green tea is better than drinking black tea. Green tea contains more vitamin C than black tea. 100g of high-grade green tea often contains C300-600 mg of vitamin C. Drinking 2-3 cups of this green tea every day can basically meet the human body's demand for vitamin C. However, after black tea is fermented, vitamin C is destroyed more. Vitamin B 1 and B2 in green tea are generally 1-2 times higher than those in black tea. In addition, the content of polyphenols with vitamin P activity in green tea is higher than that in black tea, so green tea is more effective than black tea in bacteriostasis, anti-aging, prevention and treatment of arteriosclerosis, inhibition of cancer mutation, prevention and treatment of radiation injury, reduction of cholesterol and blood lipid, and prevention of dental caries in children. Seasonally speaking, green tea should be drunk in summer, because it is non-fermented, with clear soup color, green leaves, high aroma, mellow taste and natural color, fragrance and taste. Vitamin c and tea polyphenols are high in content. Has the effects of clearing away heat, relieving summer heat, detoxicating, tranquilizing, improving eyesight, promoting fluid production and quenching thirst. Drinking in summer gives people a green and cool feeling. If you add a few chrysanthemums, honeysuckle or a few drops of lemon juice to tea, it can cool off the heat. It is suitable for drinking black tea in winter. Black tea is a kind of fermented tea. After special processing of black tea, it has formed unique quality characteristics of color, fragrance and taste. Black tea is rich in caffeine, refreshing and diuretic, which can help digestion of stomach and intestines, promote appetite, eliminate edema, strengthen myocardium and prevent skin cancer caused by radiation. Black tea has little stimulating effect and mild tea nature. Drinking milk with sugar in winter can nourish the stomach, and in summer it can be made into iced tea with different flavors. In short, drinking tea is good for physical and mental health.