Nage Cu polymetallic deposit, a typical deposit in Congjiang County, southeast Guizhou province, China, is located in the southwest Jiannan Block. The ore deposit are hosted in Neoproterozoic strata and structurally controlled by EW-trending fault. The ore body is coexisting with diabase dyke in space.REE of ores, host rocks, granite and granite porphyry bulk-rocks were analyzed by ICP-MS. Based on comparative study on contents, parameters and patterns of REE for whole rock of ores, host rocks and igneous rocks, the authors consider that the REE in the ore-forming fluids were originated from host rocks.