The paper studies the chronology and geochemistry of limburgite at Liucheng, Fujian provience, in order to better understand the Cenozoic mantle nature and the geotectonic setting of Fujian. Limburgite is a kind of alkaline ultramafic rock, and formed at 12.6Ma. It is enriched in Mg and Fe, especially LILE and HFSE, and depleted in alkali elements. Nb and Ta shows positive anomalies. The rock is also strong enrichment in LREE and relatively depletion in HREE. The all abovementioned features of trace elements are similar to those of the ocean island basalt (OIB). The trace elements analysis shows that limburgite is the product of partially melting of mantle peridotite and diagenesis did not undergo the crustal contamination. The source mantle shows the HIMU nature.The asthenosphere mantle, the dehydrated ocean shell and remaining the ancient enrichmental mantle had mixed to form the source. The Liucheng limburgite formed in the continental rift. Compared with the Cenozoic basalts, it is suggested that the mantle compositons of southeastern China are characterized by multiple mantle end components.