Abstract:On the basis of previous research results and detailed field geological observations, the graphite-bearing rocks in the southeastern part of the Ailaoshan complex in the Cenozoic Ailaoshan-Red River (ASRR) strike-slip fault zone are studied in this paper. The technical methods of optical microscope (OM), scanning electron microscope (SEM), electron backscatter diffraction (EBSD) and Raman spectrum are mainly used to comprehensively analyze the deformation macro- and micro-structure of graphite-bearing rocks and minerals, the graphite Raman temperature, the mineral lattice preferred orientation (LPO) and its deformation-metamorphic environment. Graphite Raman spectrum geothermometer shows that the Raman peak temperature of graphite-bearing rocks in the study area is 530-460℃. Graphite and matrix quartz and plagioclase have obvious similar lattice preferred orientation, and graphite and quartz show strong slip system in the direction of (0001) . The development of fine-grained graphite slip system and feldspar and quartz play an important role in rheological weakening of the grain plastic deformation of the whole rock.