本文介绍了恐龙蛋壳化石的宏观和微观结构特征，在扫描电镜下观察到了恐龙蛋壳化石的组织结构。对恐龙蛋壳化石做了碳、氧同位素分析，经研究发现，恐龙蛋壳化石碳、氧同位素异常主要与成岩次生变化有关。要从恐龙蛋壳化石的碳、氧同位素上去追索恐龙的食物类型、生态环境及其绝灭原因等，必须对恐龙蛋壳化石的原生碳酸盐矿物和次生碳酸盐矿物加以分离。 This paper introduces the macroscopic and microstructural features of the dinosaur eggshell fossils, and observes the tissue structure of dinosaur eggshell fossils under the scanning electron microscope. Carbon and oxygen isotope analysis of dinosaur eggshell fossils has been done. The results show that the carbon and oxygen isotopic anomalies of dinosaur egg shell fossils are mainly related to the secondary changes of diagenesis. To retrieve the dinosaur food type, ecological environment and extinction reason from the carbon and oxygen isotopes of the dinosaur eggshell fossils, the native carbonate minerals and the secondary carbonate minerals of dinosaur eggshell fossils must be separated.