1. Helps digestion: Pu 'er tea can stimulate the secretion of digestive juice and help people digest food better.

2. Lowering cholesterol: Polyphenols in Pu 'er tea can effectively reduce the cholesterol content in blood, thus reducing the risk of cardiovascular and cerebrovascular diseases.

3. Improve immunity: A variety of antioxidants in Pu 'er tea can help the human body improve immunity and reduce the occurrence of diseases such as colds.

4. Lowering blood pressure and lowering blood sugar: Polyphenols in Pu 'er tea can effectively lower blood pressure and blood sugar, which is beneficial to the prevention and treatment of diseases such as hypertension and diabetes.

5. Help to lose weight: Pu 'er tea can stimulate human metabolism, accelerate the decomposition and metabolism of fat, and help to lose weight.

The disadvantages and precautions of drinking Pu 'er tea include:

1. Caffeine: Pu 'er tea contains caffeine, which may lead to adverse reactions such as palpitation and insomnia.

2. It has an impact on the liver: Pu 'er tea contains phenolic compounds, and long-term heavy drinking may burden the liver and cause abnormal liver function.

3. Pay attention to quality: the quality of Pu 'er tea is uneven, so we should choose formal channels to buy high-quality products.

4. Pay attention to the drinking temperature: Pu 'er tea generally needs to be brewed with hot water, but too hot tea will irritate the stomach, so the drinking temperature should be controlled.

In a word, the advantages of drinking Pu 'er tea outweigh the disadvantages, but we should pay attention to the quantity and quality of drinking, as well as personal physical condition.