Abstract: 【Objective】The study was to select high-quality vegetable sweet potato varieties that suitable for production in Hainan in hot summer and autumn.【Method】10 vegetable sweet potato varieties were selected for trial and evaluation for 2 years. Through the investigation of agronomic traits and disease resistance on the tested varieties, the determination of leaf color value and dry matter rate, and the evaluation of nutritional quality and taste were carried out. 【Result】In terms of total yield, Haida 7798 and Qiancaishu 2 were significantly higher than that of the control Fushu 7-6; in terms of nutritional quality, EC15 had the lowest nitrate content, Qiancaishu 2 had the highest soluble sugar content and vitamin C content with 99.42 mg/g and 13.92 mg/g, respectively, while Shulv 2 had the highest soluble protein content; in terms of disease resistance, Guangcaishu 7, Guishucai 14-7, Haida 7798 and Qiancaishu 2 were the best varieties; in the evaluation of the taste, Guangcaishu 7 and Guishucai 14-7 had higher comprehensive scores. 【Conclusion】From the results mentioned above, it can be concluded that, Haida 7798, Qiancaishu 2, Guangcaishu 7 and Guishucai 14-7 have higher yields, good taste and flavor, and rich nutritional quality, which are suitable for planting and production in Hainan in summer and autumn.