Abstract：The Nanyangtian scheelite ore deposit is a rarely-seen layered scheelite deposit in southeastern Yunnan, whose ore body is hosted in the layered skarnoid of Proterozoic Nanyangtian Rock Group. Based on detailed field work in combination with indoor rock geochemical analysis as well as a comparison with typical ore deposits both in China and abroad, the authors carried out restoration of original rock of skarn，found that the original rock of the skarn seems to be submarine volcanic eruption (or hot water) sediments combined with terrigenous clastic rocks, and reached the conclusion that the skarn was metasedimentary skarn belonging to skarnoid.