Dinosaur eggs in Anhui province are mainly preserved in Xiuning Basin and Qianshan Basin, and there are no taxonomic description in Xuancheng Basin. Dinosaur eggs and eggshells from the Upper Cretaceous Xuannan Formation near Qingyijiangnan Avenue, Xuanzhou District, Xucheng city are the first report in Xuancheng Basin, which are important for the stratigraphic division and correlation of the K—T boundary. Dinosaur eggs in this paper were analyzed by macrostructural measurement and microstructural observation. Results: Results show that these eggs are elongate in shape (the length is more than 100mm and width is 70mm). Chain or ridge ornamentations are distributed on the outer surface and eggshell thicknesses varies between 1.10 mm and 1.80 mm. The boundary between the cone layer and the columnar layer is nearly straight, and the ratio between them is 1∶4~1∶3. The radial microstructures in the cone layer are arranged closely and pore are few with erect shape.Conclusions: These dinosaur eggs are belonged to Elongatoolithus andrewsi in Elongatoolithidae, which are the first detailed taxonomic record in the Xuancheng Basin, southern Anhui Province. These eggs are mainly preserved in the Upper Cretaceous Xuannan Formation. The studies of oospecies classification and future geochemistry provide important basic data for the dinosaur extinctions at the K—T boundary.