1. slimming: sugar-free green tea is rich in catechins and caffeine, which can stimulate metabolism and promote fat decomposition and consumption, thus achieving slimming effect.

2. Anti-oxidation and anti-aging: Tea polyphenols in green tea have strong anti-oxidation ability, which can effectively scavenge free radicals, protect cells and delay aging.

3. Lowering blood fat and blood pressure: Tea polyphenols and catechins in green tea have the functions of lowering blood fat and blood pressure, and can prevent and improve cardiovascular diseases.

4. Fresh breath: Sugar-free green tea is rich in tea polyphenols and catechins, which can inhibit the reproduction of oral bacteria and prevent bad breath.

5. Improve immunity: Sugar-free green tea is rich in tea polyphenols and vitamin C, which can enhance immunity and prevent diseases such as colds.

6. Improve digestive function: Theophylline and tea polyphenols in sugar-free green tea can promote gastrointestinal peristalsis, improve digestive function and prevent gastrointestinal diseases.