The Sidingheishan layered intrusion is located in the eastern of the Huangshan mafic-ultramafic rocks belt, East Tianshan, large-scale, northeast trending, can be divided into north and south intrusion, composes of clinopyroxene peridotite, olivine pyroxenite, olivine norite-gabbro, olivine gabbro, pyroxene amphibolite, gabbro, hornblende gabbro, diorite, and the ultramafic rock phase and gabbro phase often showed a rhythm with interbedded. The petrochemical compositions belong to the tholeiitic series. The chondrite-normalized REE patterns are flat type and positive Eu anomalies, generally enriched in LILE (i.e., Rb, Ba, U), significant positive anomalies of Sr and Nb, Ta loss.