There are farmers to inquire to introduce special characteristics of sweet potato, the development of mountain agriculture and economy. Upon inquiry, China has the following new characteristics of sweet potato varieties: 1, bozi sweet potato chips long spindle to cylindrical shape, smooth potato, pale rose red, deep orange red. The potato blocks are regular and concentrated, and the number of single plants is more than one. The average plant weight is 1-1.8 kilograms, the rate of large and medium-sized potato is more than 80%, the drying rate of the tubers is 26%, the adaptability is wide, the planting period is elastic, and drought resistance Medium resistance to moisture, good fertilizer performance, potato block water content, good storage performance, not easy to lose water or rot. Each 100 grams of fresh potato contains 50.34 milligrams of vitamin c, 9.46 milligrams of carotene, high soluble sugar content, crude protein 4.87%, and crude fat 2.65%. Has excellent food quality and processing quality, good product performance, is currently the ideal fresh food species, development and utilization of potential. 2. Fruit Sweet Potatoes This variety is light yellow in color and orange in color. It is suitable for cooking, with crisp and fresh foods, good taste, fruity taste, and the name of “fruity hawthorn”. At present, domestic fruit sweet potato has just been popular and it is difficult to satisfy the market in five years. If seedlings are sold, the benefits will be higher. 3, mini-potato sweet potato is only about 50-150 grams per piece. Mini-sweet potato is popular with consumers when it comes out. The products are in short supply. The main reasons for this variety are: First, good quality, sweet taste, fine texture , No crude fiber, carotene content of 7 mg / 100 g, can meet the different edible methods such as cooking, baking requirements, suitable for people of different tastes; Second, the mini-potato sweet cooked whole, its size is suitable for microwave ovens, Convenient for eating; Third, it is suitable for one-time consumption and children's consumption. 4. Sweet potato This variety has a length of 1-1.5 m. Its base has many branches, and its vines, leaves, veins, and petioles are all light green. The leaves are heart-shaped, the potato is concentrated, the potato block is spindle-shaped, the potato skin is orange, and the potato meat is Orange, dried red, excellent taste, strong flavor, sweet, noodles, sand, dry rate of 32-35%, is a good raw material for baked sweet potato, processed yam, canned, fresh dried potato, sugar and other health foods. Precocious, high-yield, high-quality, comprehensive traits, good growth potential, strong disease resistance, high yield, stable yield; wide adaptability, resistance to pods, drought, fertilizer, management, labor, stem nodes, less adventitious roots, without turning. 5. Japanese sweet potato This variety belongs to fresh and roasted food species. Its potato is concentrated early and can be harvested in July. The skin is smooth, the skin is yellow, the orange is red, the taste is sweet, and the taste is particularly good. After the skin is cooked, it is separated. In addition to the processing of baked potatoes and yams, it is also suitable for fresh food and a variety of cooked foods. The varieties with strong disease resistance, high yield, early maturity and high quality are the ideal varieties to replace China's yellow-skinned potato. The potato was early and fairly concentrated, with 4-6 tubers per plant. 6, food, potato and dual-use varieties of this species is the use of modern high-tech means of Chinese scientists to transfer the genes of the water spinach into ordinary sweet potato, a long-term ground vegetables, underground knot sweet potatoes, with food, vegetables, drugs and rare sweet potato varieties The plant type is erect, with many branches, short vines, and pear-head shaped, dark green leaves. It has the characteristics of a hollow vegetable seedling. If the vegetable market is vacant in the off-season, the benefits are extremely high. The variety is drought-tolerant, resistant to pods, resistant to storage, resistant to transportation, the peel is pink, smooth and crack-free, has a high sugar content, good taste, rich nutrition, and contains a variety of vitamins and trace elements. With the above characteristics of sweet potatoes, farmers can conduct introduction trials based on soil, climatic conditions, market conditions, and people’s habits and then promote them after success.