1. Promote eye health: cassia seed tea is rich in antioxidant substances such as vitamin A and blueberry glycoside, which helps to protect the retina.

2. Clearing away heat and toxic materials: cassia seed tea is usually used to treat thirst, sore throat, fever and other symptoms caused by fever.

3. Relieve constipation: cassia seed tea has the effect of relaxing bowels, and long-term drinking can relieve constipation.

4. Lowering blood sugar and blood fat: cassia seed tea contains an active ingredient called cassia saponin, which can lower blood sugar and blood fat and help to regulate the balance between blood sugar and blood fat.

5. Improve sleep: cassia seed tea has a calming effect, which can help people relax and promote sleep.

It is worth noting that cassia seed tea also has some side effects, such as excessive food intake, adverse effects on transient visual impairment, and careful drinking for patients with low blood pressure. Therefore, it is best to consult a professional doctor before drinking cassia seed tea.