Abstract: The antibacterial stainless steel containing copper and silver after cold rolling was annealed at 1000 ℃, 1050 ℃ and 1100 ℃, and the effect of annealing temperature on the microstructure was observed.The polarization curves and electrochemical impedance spectrum were measured by electrochemical workstation to investigate the influence of three different annealing temperatures on the corrosion resistance.The results show that austenite grains grow with the increase of annealing temperature.The corrosion resistance of the stainless steel is the best when annealing temperature is 1050 ℃.