An ion- adsorption type REE (iRee) deposit have been found on Lincang granite in Yunnan province. It’s a typical iRee deposit found on highland, which can be a model to find similar deposit on the similar background. Geochemical and mineralogical studies were conducted on this iRee deposit on Linchang granite in Yunnan province, in order to reveal the transport and adsorption of rare earth elements (REE) related to the ionadsorption type mineralization. The parent rock is porphyry biotite monzogranite. REE are contained dominantly in allanite as well as in titanite, ilmenite, monazite, xenotime, apatite and zircon. REE pattern of the parent granite bigger than 150×10-6, indicates enrichment of LREE relative to HREE and no significant Ce anomaly. Weathering crust is ranging from 2 to 30 m depth, which can be separated to humid layer, completely weathering layer and partly weathering layer, REE is rich in completely weathering layer. REE content of the weathering crust is 3~5 times to parent rock. REE pattern of weathering crust is parent rock pattern alike, part of which is showing high HREE. Land shape changed and the ore body change accordingly. REE contents showing on hillside richer than which on top and foot. REE rich in deep or shallow depends on the thickness of humid layer. The terrain high in the north and low in the south, on the contrary, REE contents showing low to high. From west to east, REE contents showing higher in the middle than in both sides, and REE in the east richer than in the west. iRee deposits are located in middlesouth of Lincang granite, all showing LREE rich. This region extends across midsubtropical monsoon climate zone and tropical Rainforest monsoon climate zone, Hilly, mountainous widespread, controlled by the secondary fault, influenced by multistage magmatic evolution, parent rock is biotite monzogranite. REE content is controlled by landform, rich in hillside, lower in foot of hill.