Abstract: The production flowsheet of BTQ001 steel is 230 mm cast slab-2.3 mm hot rolled plate-0.63 mm first cold rolled sheet-850 °C annealing-0. 27 mm second cold rolled sheet-1200°C annealing, the changes of microstructure of the products in each phase are analyzed, and the magnetic properties of the finished products of oriented silicon steel are statistically analyzed. The experimental results show that the BTQ001 oriented silicon steel optimum production process is to control the heating temperature at 1280 ~ 1300 °C for hot rolling, the finishing rolling at 950 °C and coiling at 550 °C.