2. Sweet potato has high nutritional value. 100g sweet potato contains 99 calories, including carbohydrate 24.7g, protein 0.6g, fat 0.2g, dietary fiber/kloc-0.6g, vitamin A and a certain amount of minerals such as calcium and potassium.

3. Proper consumption of sweet potato can provide diversified nutrition sources for human body. Sweet potato contains certain cellulose, which can promote intestinal peristalsis. Compared with traditional staple foods, such as rice and noodles, its calories are slightly lower, and moderate consumption during weight loss is beneficial to control the total calories.