Abstract: The law of evolution of microstructure and texture of 50W400 hot rolled non-oriented silicon steel after normalized annealing was observed and analyzed by means of metallography, XRD and other instruments, and the effects of normalized process parameters on the microstructure and texture were clarified.The results show that the deformation microstructure of hot rolled plate is completely recrystallized with the increase of normalizing temperature and time.The grain size is uniform after normalized treatment at 970 ℃for 5 min, with an average size about 121.44 μm.The distribution of100and110favorable texture is uniform.The intensity of the unfavorable texture on γ orientation decreases.