采用固体围压高温高压三轴变形实验装置，对望湘花岗岩作了不同温度、压力下的固态流变实验；变形试样作了光学显微镜和ＴＥＭ分析．实验温度３５０～９５０℃，围压６０～４２０ＭＰａ，应变速率１０－６ｓ－１．试样在较低温度压力下表现为脆性破裂；在较高温度压力下出现脆性—韧性过渡状态．望湘花岗岩中长石、石英和黑云母有不同的变形构造和流变性质． A solid state pressure high temperature and high pressure triaxial deformation experiment device was used to make the solid rheological experiment of Wangxiang granite under different temperature and pressure. The deformed specimen was analyzed by optical microscope and TEM. Experimental temperature 350 ~ 950 ℃, confining pressure 60 ~ 420MPa, strain rate 10-6s-1. The specimen showed brittle fracture at lower temperature and pressure; brittle-ductile transition state occurred at higher temperature and pressure. Wangxiang granite feldspar, quartz and biotite have different deformation structure and rheological properties.