During the processing of dried potatoes, sweet potatoes are very nutritious, containing a large amount of sugar, protein, fat  various vitamins  minerals. After cooking, some starch of sweet potatoes will change, which can increase about 40% of food fiber compared with raw food, which can effectively stimulate intestinal peristalsis  promote defecation. When users cut sweet potatoes, there is a white liquid under the skin of sweet potatoes, which contains Mirabilis jalapa, also known as sweet potatoes, Dioscoreaceae Dioscorea twining herbaceous vines. The top branch of the underground tuber expands into an ovoid tuber at the end, with a light yellow  smooth outer skin.

The stem is left-handed, with thorns at the base  is covered with T-shaped pubescence. For example, "Xu Shu 32" belongs to a new type of sweet potato with ultra short vines, high starch,  high-quality edible properties. According to taste, sweet potatoes can also be divided into several types: glutinous sweet (noodle sweet) type, soft sweet type, fruit type,  so on. Sweet potato is another name of the leguminous plant, but it mostly refers to the Convolvulaceae sweet potato, which has a wider cultivation range.