1. Clearing heat and detoxifying: Black tea itself has the effect of clearing heat and detoxifying, and the detoxification effect is further strengthened after adding osmanthus fragrans, which helps to eliminate toxins in the body and remove oral odor.

2. Relieve fatigue: Black tea contains caffeine, which has a refreshing effect. The aroma of osmanthus has a soothing effect on nerves and helps to relieve fatigue and stress.

3. Help digestion: Tannic acid in black tea can promote the secretion of gastric juice, and osmanthus fragrans can help digestion and relieve indigestion and stomachache to some extent.

4. Lowering blood fat: Black tea contains tea polyphenols, which helps to lower blood fat and cholesterol. Flavonoids in osmanthus fragrans have the function of regulating blood fat.

5. Health care: Both black tea and osmanthus fragrans are considered to have certain health care effects, and long-term drinking can enhance human immunity.