Sweet potato is also called sweet potato, sweet potato, sweet potato and sweet potato. It has been cultivated in China for more than 400 years. Sweet potato planting is widely distributed, starting from the South China Sea Islands in the south, reaching Inner Mongolia in the north, reaching Shaanxi, Longnan and Xinjiang in the northwest, extending to the south of Heilongjiang in the northeast via Liaoning and Jilin, and reaching southern Tibet and Yunnan-Guizhou Plateau in the southwest. Sichuan basin, Yellow River basin, Yangtze River basin and southeast coastal provinces are the main sweet potato producing areas in China.

The main producing areas in the world are all located south of 40 north latitude. The planting area is the largest in Asia, followed by Africa and the third in America. 1985 The cultivated area of sweet potato in the world is 8.003 million hectares, and the total output is114.38 million tons. Sweet potatoes are widely distributed in China, and most of them are produced in Huaihai Plain, Yangtze River Basin and southeast coastal provinces.

The whole country is divided into five potato regions: northern spring potato region, Huanghuai spring potato region, Yangtze River summer potato region, southern summer potato region and southern autumn potato region.