Starch 9-20%, protein1.5-2.3%, fat 0.1~1.1%and crude fiber 0.6-0.8%. The nutrients contained in 100g potato are: energy 318kJ, calcium 5-8mg, phosphorus 0/5-40mg, iron 0.4mg～0.8mg, potassium 200~340mg and iodine 0.8-1.2.

Medicinal value:

Can be use for treating stomachache, rib tuberculosis, carbuncle, eczema and scald, and is a traditional Chinese medicine for tonify stomach and a drug for detoxifying and relieving swelling, and is flat in nature and sweet in taste.

Chinese medicine believes that potatoes are "sweet and non-toxic, which can strengthen the spleen and stomach, replenish qi and regulate the middle warmer, relieve pain and relieve constipation." It has a significant effect on patients with spleen and stomach weakness, indigestion, gastrointestinal disharmony, epigastric pain and poor stool. " Modern research has proved that potato has special effects on regulating dyspepsia, and it is a good medicine and high-quality health care product for patients with stomach diseases and heart diseases. Potatoes are nutritious and one of the anti-aging foods.

The new dietary guidelines suggest that each person should eat potatoes about 5 times a week, with 50 grams-100 grams each time. Potatoes contain as much as 300 mg of potassium per 100 g, which is the most in more than 20 kinds of vegetables and fruits that are often eaten. A Japanese study found that eating 5-6 potatoes a week can reduce the risk of stroke by 40%.

According to foreign research, the antibacterial ingredients contained in potatoes can help prevent gastric ulcer. It not only has antibacterial effect, but also does not cause drug resistance.