Abstract: Gayahedonggou Copper-Nickel Deposit is located in East Kunlun orogenic belt adjacent to Great Middle Kunlun Fracture and bears favorable ore-forming geological conditions.4 magnesian ferrous-super magnesian ferrous rock mass bodies are found in the district that mainly include peridotite,pyroxenite,gabbro,pyroxene peridotite,peridotite,peridotite tremolite and anorthosite.In magnesian ferrous-super magnesian ferrous rock mass bodies Ⅰ,Ⅱand Ⅳ,copper-nickel ore bodies are found,peridotite and pyroxenite mainly included followed by peridotite.Based on the geological,geochemical and geophysical characteristics analysis,and the comparison between the typical deposits from the same orogenic belt,it is considered that the district has favorable conditions for magmatic copper-nickel ore bodies prospecting and great prospecting potentials.