Shajia Cu-Ni ore-bearing basic complex is one of the intrusive rocks in Hualong basic-ultrabasic rocks belt, it is small scale, weak lithological zoning. The analysis on rock geochemistry indicate that the intrusive is calc-alkaline, iron series, rich in LREE, depleted in high field strength elements such as Nb, Ta. The analysis on the sulfide display that the initial 187Os/¹⁸⁸Os ratios are from 0.346 9 to 0.407 1, the γOs values are from 180 to 228, which suggest that abundant crustal material was mixed with the magma, and the content of crust-derived Os was estimated to >30%.