According to the analysis and comparison with the content and geochemical characteristics of and trace element from Cu-Ni sulfide deposits between Kelatongke and Jinchuan， meanwhile， combing different tectonic setting and rock series of these two types of deposits， we study their magmatic and mineralization processes. The results show that major element of Kalatongke belongs to the tholeiitic basalt system； incompatible trace element presents as enrichment of large ion lithophile elemen(LILE) and depletion of high field strength element(HFSE)， suggesting that they are derived from the continental crust； the rare earth element (REE) presenting rich in light rare earth element (LREE)， and there is no obvious Eu anomalies， Sr and Nd isotopes indicates that the magma source is depleted asthenosphere mantle. Major element of Jinchuan deposit belongs to the tholeiitic basalts and mid ocean ridge basalt system； incompatible trace element presents as enrichment of LILE， depletion of HFSE， showing the magma suffers from contamination of crust materials or there are materials of subducted oceanic crust in the source ； the ratio of N(La)/N(Nb) and N(Zr)/N(Nb) indicating its source is derived from EMI mantle； the REE presenting enriched in LREE， the ratio of N(La)/N(Yb)， N(La)/N(Sm) and N(Gd)/N(Yb) presenting enriched in LREE； and there is no obvious Eu anomalies， Sr and Nd isotopes declaring magma derived from enriched mantle. And we also predicted the magma conduit and mineralization potential of two ore deposits by 3D geological modeling， hoped it will useful for later period exploration.