In order to scientifically evaluate the grade of cultivated land quality of Jiangsu province and to improve its management level of cutivated land quality，the unified index system and classification standard of cultivated land quality suitable for Jiangsu province were determined，data processing and classification of cultivated land quality were carried out with GIS technology according to the national standard“Cultivated land quality grade”(GB/T 33469-2016). The results showed that the high，medium and low grade of cultivated land accounted for 31.55%，48.05% and 20.40% of the total agricultural regions，respectively.Of all major agricultural regions，the grade of cultivated land quality ranked in descending order as:Taihu agricultural regions，Lixiahe and Riverside agricultural regions，Ningzhenyang Hilly and Coastal agricultural regions，Xuhuai agricultural regions.There are mainly five obstacle factors of Jiangsu cultivated land，including salinization，barrier level，acidification，infertility and waterlogging.Saline land mainly distributed over Costal and Xuhuai agricultural regions.Barrier level land mainly distributed over Ningzhenyang Hilly，Xuhuai，Taihu agricultural regions.Acidified land mainly distributed in Lixiahe，Ningzhenyang Hilly agricultural regions.Barren land mainly distributed over Riverside and Xuhuai agricultural regions.Waterlogging farmland distributed mainly distributed in Lixiahe and Taihu agricultural regions.Research results could provide scientific basis for comprehensively mastering the cultivated land quality grade of Jiangsu province，finding out the main obstacle factors，amending and fertilizing the targeted land，and further improving the quality of the cultivated land.