The main component of stevia dry leaves is steviol glycoside, which not only has high sweetness and low calorie, but also has certain pharmacological effects. Stevia sugar mainly has the effects of treating diabetes, controlling blood sugar, lowering blood pressure, anti-tumor, anti-diarrhea, improving immunity, and promoting metabolism. It has a good effect on controlling obesity, regulating gastric acid, and restoring nerve fatigue. It also has a significant effect on children's dental caries, and the most important thing is that it can eliminate the side effects of sucrose.