Sugar substitutes, also known as sweeteners, refer to food additives that give food a sweet taste. Sweeteners are food additives that give food or feed a sweet taste, improve food quality, and meet people's food needs. Sugar substitutes have sweetness, but compared to sugar, they are extremely low in calories or cannot be metabolized by the human body. They are often added to foods that need to reduce calories instead of sugar. In addition to people who are watching their calories to lose weight, sugar substitutes also bring great convenience to diabetic patients. Sucrose, fructose, and starch sugar are not listed as food additives in Taiwan.