The Qerkh Yashar region in the northwestern Khoy is placed 140km away from Urmia. One of the distinctive features of this area is its setting in the brittle-ductile shear zone. Existence of faults, folds, veins and boudinage and also mylonitic rocks at the study area, illustrate on its location at brittle-ductile zone. On the other hand, the presence of different types of mylonitic rocks in the research area, which have various structural fabrics, indicate its setting in the brittle-ductile zone. In this research, within the sampling of field works, microscopic structures have also been used to determine the shear direction. The trend of structures is NW-SE and contains: C, S, and C' fabrics, mica fish structure, disharmonic folds, mantled porphyroclasts of δ-σ type and folded boudinage as shear sense indicators that exhibit the right lateral slip at the deformed area. The trend of the structures in the studied area is NW-SE and the kinematic indicators include: (C, S, C`) type fabrics, mica structures, asymmetric folds, mantled porphyroclasts of the type (𝜹, 𝝈) and folded boudinages, which in most of the metamorphosed areas show a dextral slip direction. The results show that the shear zone of NW of Khoy, has been formed within the dextral transpression tectonic zone.