Shuanglong ductile shear zone in Henan province lies in the core of Qinling orogenic belt. From outside to inside, a series of dynamic metamorphic rocks developed, such as protomylonite, mylonite, ultramylonite and pseudotachylite developed in sequence. This ductile shear zone is one of the reticulate strike slip ductile shear zone in the core of eastern Qinling orogenic belt. Study on microstructures have been carried out. It has a certain geological significance for studying metamorphic deformation environment of eastern Qinling orogenic belt. On the basis of field geological work, through analysis on petrology and characteristics of microstructures of ductile shear zone, metamorphic deformation environment, such as properties, temperature, ancient stress and strain rate of ductile shear zone.have been analyzed and studied. It is showed that kinematic properties of Shuanglong ductile shear zone are sinistral shear, metamorphic deformation temperature is about 400℃~500℃, and the paleo stress value is about 51~61MPa.