1. Promote blood circulation: osmanthus tea can promote blood circulation, relieve blood vessel blockage and coagulation, and help improve body metabolism.

2. Lowering blood sugar: osmanthus tea contains a substance called cinnamic acid, which can lower blood sugar and is very beneficial to diabetics.

3. Enhance immunity: osmanthus tea is rich in antioxidants, which helps to enhance immunity and improve physical condition.

Contraindications of cinnamon tea:

1. Pregnant women should not drink it: osmanthus tea can cause uterine contraction, which may lead to miscarriage, so pregnant women should avoid drinking it.

2. People with weak constitution: People with weak constitution who drink osmanthus tea can easily cause physical discomfort.

3. Combination of ginseng tea: It is not recommended to take it with ginseng tea, because both teas have strong stimulating effects, which may cause discomfort such as palpitation and dizziness.

4. Long-term drinking: osmanthus tea contains some chemical components, which may cause damage to organs such as liver and kidney if consumed in large quantities for a long time.