Abstract:The granite bodies in Pingda area of Longling, western Yunnan are mainly the early Caledonian movement and the magmatic response formed by Yanshanian-Himalayan magmatism. The main elements, rare earth elements and trace elements in granite samples were determined by ME-XRF26d X-ray fluorescence spectrometer and ME-MS81 inductively coupled plasma mass spectrometry. In the study area, the main lithology is granite and granodiorite. The average SiO2 content is 70.9%, Al2O3 content is between 13.8% ~18.2%, K2O content is 3.39% ~5.83%, the average Na2O content is 2.48%, showing the characteristics of “Rich in Silicon, High Aluminum-Sodium, High Magnesium-Potassium”. The characteristics of high potassium calc-alkaline series belong to peraluminous granite. The total amount of REE is on the high side, with an average of 137×10-6, ratio of LREE and HREE in 1.52~8.2, with a relatively strong fractionation. LREE content is between 32×10-6~197×10-6 with relatively rich; and HREE range is 14.4×10-6~65.8×10-6 with relative deficit. Eu shows a significant negative anomaly, the curve to the right; meanwhile Sr=0.1×10-6~136×10-6, Yb averaged 1.9×10-6, which is in line with the characteristics of low Sr and low Yb, which refers to that granite is located at low pressure or formed under moderate pressure, it may be a collision-related calcium-alkali granite. Based on the previous research results, systematic lithofacies, mineralogy and zircon U-Pb dating of the Late Mesozoic granite in this area were conducted in this paper, which canprovide reference for the future research work of the granite body in Longling area.