Polydextrose is not a sugar substitute. Polydextrose is a kind of soluble dietary fiber, with low-calorie characteristics, and can produce special physiological metabolic functions after entering the human body, which can play a role in increasing the amount of water retention in the stool, promoting intestinal peristalsis, and regulating the intestinal flora and so on. Therefore, polydextrose is not a sugar substitute. Sugar substitutes with low calorie, low glycemic index and other characteristics, can be widely used in food manufacturing, very suitable for diabetes or obese people, mainly glucitol, xylitol, stevia and so on. People who need to control sugar should maintain a low-sugar diet, avoid eating cakes, milk tea, chocolate and other high-sugar foods, and patients diagnosed with diabetes should actively cooperate with their doctors for treatment.