Trace elements and rare earth elements (REE) contents of conodonts, distinguished by very low color alteration index (CAI), were measured. Comparative analyses of surrounding rocks geochemistry study, using solutions, a significantly different response to paleo-environmental changes was revealed. Therefore, conodont elements are more sensitive to ambient variation than the surrounding rocks, and it is reliable for LA-ICPMS in situ analysis of conodonts. Meanwhile, the authors reconstruct the Early Triassic environment using the Ce anomaly of conodont, and it provides a new evidence for acute evolutions and long-term anoxia conditions from the Permo-Triassic crisis to the Early Triassic.