In this paper, the carbon-14 dating was used, and 9 batches of Os Draconis samples correspond to the fossil age range: 3 batches of samples are between 18000 and 37000 years, and 6 batches of samples are 43500 years before. XRD and EPMA were used to determine the phase composition and elemental morphology of 9 batches of authentic Os Draconis. The main component of the Os Draconis was calcium hydroxyphosphate and some samples were hydroxyphosphate Symbiosis of calcium and calcium carbonate; the micro-phase is mainly hydroxyapatite, while calcium carbonate is mostly in the form of calcite-type calcium carbonate, and a small part is in the form of dolomite. The ARF, ICP-AES, ICP-MS, and AES were used to determine the element content of the samples. The results showed that the Ga/P ratio in the Os Draconis was greater than 2. The trace elements of the 9 batches of Os Draconis had approximately the same Distribution pattern: Sc, V, Cr, Co, Ni, Cu are all depleted relative to the original mantle, Ba, Sr, As are abnormally enriched, and element U is highly enriched; the distribution of rare earth elements in 9 batches of Os Draconis is also It has roughly the same distribution pattern, showing LREE enrichment type, with Ce negative anomaly, Eu partial positive anomaly, partial negative anomaly, LREE positive anomaly; 6 batches of Os Draconis before 43500 years, the total amount of rare earth elements is significantly higher The three batches of samples between 18000 and 37000 years are presumed to be related to their burial diagenetic environment on the one hand, and to the older the age, the higher the concentration of some elements.