1. Remove dampness and water: barley contains a large number of amylase enzymes, which can help digestion and metabolism of the body's accumulated dampness, promote the body's metabolism, to avoid edema and inflammation.

2. Improve the skin: Job's tears contain a large number of B vitamins and minerals, which have a very good effect on the repair and improvement of the skin. Job's tears tea is also known as "beauty tea".

3. Regulate blood pressure: Potassium and magnesium in barley are very useful elements for normalizing blood pressure, barley tea can properly reduce blood pressure and heart burden.

4. Strengthen the spleen and stomach: Job's tears are rich in dietary fiber and amylase, which can help the human body to digest and absorb, and regulate the function of the gastrointestinal tract, and it is also very helpful for the recovery and weight loss after illness.

Contraindications:

1. Job's tears tea is rich in vegetable proteins and starch, and people suffering from diabetes, gastric disease, liver disease, etc. are advised to avoid excessive drinking.

2. Job's tears tea will burden the kidneys if consumed in excess, and should not be consumed in large quantities for a long period of time.

3. When eating barley tea, it is best to boil it and drink it to avoid bacteria and parasites.

4. For pregnant women and children, the amount of barley tea should be appropriate, not excessive.