The texture and microstructure varying between thicknesses of hot-rolled sheets can be inherited to the final recrystallized sheets in silicon steel and affect its magnetic properties. Deformed and dynamic recrystallized microstructures produced in the surface layers during hot rolling bring different shear textures. Based on the study of deformed shear textures in the surface layers of hot-rolled sheets, it is necessary to examine the shear textures in the dynamic recrystallization zone. The cast slabs of Fe-2.5Si-0.8Al silicon steels with columnar grains are hot rolled in multiple passes. This study investigates the formation of dynamic recrystallization zone and characteristics of shear texture using EBSD technique. Consequently, the distribution of different shear textures in the fine grain region is obtained. The results indicate that the dynamic recrystallization zone in the horizontal band appears in the subsurface layer; simultaneously, it is surrounded by deformed grains with different shear textures in hot-rolled sheets with 88% reduction. A Copper texture component easily appears in the sub-surface layer and becomes more than Goss and Brass texture components in dynamic recrystallization zone and the surrounding deformed matrix when subjected to heavy shearing. The Goss texture is weak in the dynamic recrystallization zone. This is because excessive shearing is harmful to the formation and retention of Goss texture. The proportion of Brass texture in the dynamic recrystallization zone is the same as that in the surrounding deformed matrix. Additionally, the shear textures of the laboratory hot-rolled sheets and the industrial hot-rolled sheets with 98.9% reduction are compared. In the industrial hot-rolled sheets, the Goss texture is most from the subsurface to the center layer (in the position between subsurface and center layers).