Sweet potato was introduced into China at the end of 16 (1573 ~ 16 19), and was first introduced into Guangdong and Fujian.

Sweet potato is native to Peru, Ecuador and Mexico in South America. With the early exploration and intercontinental exchange of business ancestors from various countries, sweet potato has gone out of its hometown and spread to inhabited places such as Europe, Africa and Asia.

Sweet potato, also known as sweet potato, sweet potato, sweet potato and so on. , belonging to the genus Panicum of Convolvulaceae, is rich in protein, starch, pectin, cellulose, amino acids, vitamins and various minerals, and has the reputation of "longevity food".