The main ingredients of cinnamon tea include:

1. Cinnamaldehyde: It is the main active ingredient of cinnamon and has antioxidant, anti-inflammatory, antibacterial and anti-platelet aggregation effects.

2. Cinnamic acid: It has antibacterial, antiviral, and lowering blood sugar and cholesterol effects.

3. Flavonoids: have antioxidant, anti-cancer, lowering blood lipids and preventing cardiovascular diseases.

4. Saponins: It has the functions of lowering cholesterol, preventing atherosclerosis and promoting liver detoxification.

5. Vanillic acid: It has the functions of protecting the heart, enhancing immunity and anti-inflammatory.

6. Caffeine: It has the functions of refreshing the brain, burning fat and increasing metabolic rate.

7. Vitamins and minerals: such as vitamin C, vitamin A, calcium, iron, magnesium, etc., can improve immunity, promote bone health and maintain physical health.