Abstract: In 2018, Liancheng Seed Breeding Farm introduced the edible and processing variety and purple variety of sweet potato for identification test from 5 units such as Crop Research Institute of Fujian Academy of Agricultural Sciences, Crop College of Fujian Agriculture and Forestry University, and Longyan Institute of Agricultural Sciences, etc. The characteristics, quality, yield and disease resistance of 12 new varieties of sweet potato were comprehensively compared. The results showed that in the edible and processing variety, Fushu 604 showed better performance on yield, taste and quality, which was suitable for the extension and plantation as the processing type of dried sweet potato, starch processing type and fresh varieties, while Quanshu 19 could be used as the variety of starch processing type to continue the experiment. In the purple variety, the yield of Jinshu No.14 was the highest, which could be used as the varieties of fresh and processing type for demonstration and extension. And Fushu 404, Longzi No.9 and Fushu No.24 could be used as fresh varieties to continue the experiment, while Funingshu No.12 and Funingzi No.5 could be used as the processing type varieties of dried sweet potato to continue the experiment.