1. Improve digestion: lemongrass tea can stimulate the secretion of gastric juices, help digestion, and relieve stomach discomfort.

2. Purify the blood: the volatile oil component in lemongrass tea has antibacterial and antiviral effects, which can purify the blood and improve immunity.

3. Relieve stress: Citric acid in lemongrass tea can help relieve stress and improve problems such as anxiety and insomnia.

4. Improve respiration: lemongrass tea has antiseptic and anti-inflammatory properties, which can effectively relieve respiratory diseases.

5. Health and beauty: lemongrass tea is rich in vitamin C and antioxidants, which can promote metabolism, protect the skin and delay aging.

However, lemongrass tea also needs to pay attention to contraindications, such as:

1. Pregnant women and lactating women can not drink lemongrass tea, because it contains volatile oils, which may cause adverse effects on the fetus or baby.

2. People suffering from stomach ulcers, inflammation or liver disease should drink less or avoid lemongrass tea to avoid irritating the condition.

3. People who are allergic to citric acid should avoid lemongrass tea to avoid causing allergic reactions.

4. Drinking lemongrass tea in large quantities over a long period of time may lead to dizziness, nausea, dry mouth and other symptoms in some people, so it should be consumed in moderation and not in excess.