1, purple potato is not purple potato. Purple sweet potato was originally called sweet potato. ), also known as red taro, sweet potato, yam (Hebei), sweet potato, sweet potato (North), sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato.

2. Sweet potato belongs to the tubular flower order, Panicum miliaceum, which is more than 2 meters long and lies on the ground. Its leaves are generally oval in shape, 4-13cm long and 3-13cm wide. Its corolla is pink, white, lavender or purple, bell-shaped or funnel-shaped, 3-4 cm long, and the capsule is oval or oblate. Sweet potato is rich in protein, starch, pectin, cellulose, amino acids, vitamins and various minerals, and has the reputation of "longevity food". The sugar content reached 15%-20%. Has anticancer, heart protecting, emphysema and diabetes preventing, and weight reducing effects. The north is commonly known as sweet potato and sweet potato. Li Shizhen's Compendium of Materia Medica in Ming Dynasty recorded that "sweet potato can tonify deficiency, strengthen spleen and stimulate appetite, and strengthen kidney yin", and said that people in the sea can eat for a long time. Chinese medicine regards sweet potato as a good medicine.