Potato is a perennial herb, but it is cultivated annually or twice a year. The underground tubers are round, oval, oval, with bud eyes, red, yellow, white or purple skin. The aboveground stems are prismatic, hairy, odd pinnate compound leaves, cymes are terminal, white, red or purple flowers, spherical berries, green or purple brown, kidney shaped seeds, yellow; Multi purpose tuber propagation can be used as medicine. According to the analysis of nutrition expert Li Shuyun, the vitality index of potato is 8.6, which proves that it is effective to improve the vitality; The disease prevention index is 126.67, belonging to the high index range; There are hundreds of varieties of potatoes in the country of origin, and new varieties are constantly cultivated around the world. At present, there are thousands of varieties in the world, some of which are suitable for staple food with a high proportion of starch, and some of which are suitable for vegetable consumption; People have cultivated many new varieties according to different uses, including white, red, purple and other varieties of flowers, round, oval and oval underground tubers, and red, yellow, white and purple skin colors; Generally, the "bud eye" on the tuber is used for cutting and sowing.