1. Refreshing: Longjing tea contains caffeine, which can improve the refreshing effect of human body and make people refreshed.

2. Anti-cancer: Longjing tea is rich in antioxidant substances such as tea polyphenols and vitamin C, which can effectively resist the destruction of free radicals in the human body and has a strong anti-cancer effect.

3. Lose weight: theaflavins and caffeine in Longjing tea can accelerate fat metabolism and help to lose weight.

4. Anti-inflammatory and antibacterial: Longjing tea contains a variety of antioxidants and bactericidal components, which has good anti-inflammatory and antibacterial effects and can alleviate diseases such as oral inflammation.

Disadvantages of Longjing tea:

1. Evil fire: Longjing tea is cold in nature, and excessive drinking is easy to damage the spleen and stomach, making the body "deficient in true yang" and showing symptoms of evil fire.

2. Drug interaction: Longjing tea is rich in caffeine and other ingredients, and interaction with some drugs may lead to adverse reactions.

3. High glutamine content: Longjing tea has a high glutamine content, and excessive drinking can easily increase the glutamine concentration in the body, leading to diseases such as hypertension.

4. Causes of insomnia: Longjing tea contains caffeine, theanine and other ingredients, and excessive drinking can easily lead to insomnia.