The magmatic Ni—Cu— PGE(platinum group elements） sulfide deposit is one of most important Copper—Nickel deposit types. It is of great significance to discussion about the metallogenic environment, mineralization and genetic mechanism of the type deposit. This paper has made a detailed analysis the Ni—Cu— PGE sulfide deposits on the conent of temporal and spatial distribution, metallogenic process, geochemical characteristics, metallogenic theory and exploration technology on the the data gathered from diagenetic and metallogenic geochronology, geochemical characteristics, ore deposit morphology, metallogenic theory and metallogenic discrimination mark. The results include: The classification methods of magmatic Ni—Cu— PGE sulfide deposits include ore hosting rocks, ore forming styles, main metal components and metallogenic tectonic environment, and the distribution of sulfide (ore bed) has the characteristics of gravity differentiation. The formation time of the magmatic Ni—Cu— PGE sulfide deposits were mainly later than the Middle Proterozoic era in the China, and were mainly than the Middle Proterozoic era in other countries. The late Paleozoic (390~430 Ma) deposits were found only in China, especially the Xiarihamu super large ore deposit has global significance. The debate between the theory of small intrusions forming large deposits and the theory of magma channels forming deposits originate is mainly in metallogenic location, magmatic intrusion pattern and the necessity for crust S. There are important reference indexes for judging ore bearing property, which include the ratio of m/f vs. Mg# and the conten of platinum group in whole rock, the ratio of Ni+Cr vs. Si+Mg and the conten of Ti in primary magnetite.