Abstract: In order to screen good quality and high yield purple sweet potato varieties which were suitable for special processing in Liancheng County, using a random block design, five purple sweet potato varieties were introduced and tested in 2012 autumn compared with‘Longyan 7-3’. The agronomic characters, economic characters, nutritional components, processing quantity of dried sweet potatoes and fried chips were evaluated. The results showed that: the highest fresh tuber yield was‘Weixian No.1’which was 41.9 t/hm². Its yield increased by 25.8% compared with control. The fresh tuber yield of‘Jishu No.18’was 31.6 t/hm². Its yield was close to control. The process stability, taste, color and other comprehensive index of dried sweet potato products with‘Weixian No.1’and‘Jishu No.18’were close to control and its morphology, color, transparency, taste and texture and so on were excellent.‘Weixian No.1’and‘Jishu No.18’were suitable for purple sweet potato varieties of processing dried sweet potato products. The fried chips with‘Weixian No.1’and‘Jishu No.18’had moderate oil content, the higher swelling degree, its products quality were close to control.‘Weixian No.1’and‘Jishu No.18’were suitable for purple sweet potato varieties of processing fried sweet potato chips products.‘Fushu No.9’,‘Quanzi No.1’and‘Ninzi No.1’had the characters of fine exterior, high nutritional quality and high dry rate, which were suitable for purple sweet potato varieties of fresh-eating and food processing sweet potato whole powder.