The Permian mantlederived magmatism had formed NiCo sulfide deposits and FeCo oxide deposits in the Pobei and Cihai area of the northeastern margin of Tarim craton. The maficultramafic complexes hosting Pobei NiCuCo sulfide deposit, Cihai FeCo oxide deposit were formed in the same period (260~290 Ma). The orebearing maficultramafic complexes show similar majortrace elements petrogeochemical and SrNdHf isotopic signatures, the trace element ratios with close partition coefficient are plotted on the same trend lines, indicating a simillar mantle magmatic source. The mantle magmatic source could be depleted mantle metasomatized by subducted slab fluids and superimposed by asthenosphere mantle. The maficultramafic rocks of both CuNiCo sulfide deposits and FeCo oxide deposits display a strong positive correlation between Ni and Co contents, but the magnetite ore shows weak correlation between Co and Ni contents. Co is mainly enriched in ultramafic rocks in maficultramafic complexes. The magnetite ores have different CoNi enrichment mechanisms from NiCo sulfide ores, cobalt minerals as cobaltite etc. occurs at the edge or fissure of pyrrhotite, suggesting an obvious hydrothermal enrichment. The Early Permian maficultramafic complexes in the northeastern margin of Tarim craton could be derived from the different degree of partial melting of metasomatic depleted mantle, which was caused by asthenosphere upwelling associated with mantle plume. NiCo sulfide deposits were formed through sulfide saturation of highMgO magma caused by crustal contamination. Low degree of partial melting of depleted mantle with subduction metasomatism had formed in the oxygen fugacity parent magma with high iron and water contents, which crystallized and formed magnetite ore, and hydrothermal process caused cobalt enrichment to form FeCo oxide deposits.