Abstract: The effect of normalizing treatment at 950 〜1 200 °C on mechanical property and 5% NaCl salt spray corrosion resistance at 35℃ of 2 mm annealed cold rolled. sheet of steel 5Crl5MoV (% ： 0. 50C, 14. 16Cr, 0. 66Mo, 0. 12 V, 0. 39Ni) has been studied. Results show that as normalized at 950 ~ 1 150℃ with increasing temperature the carbide in steel reduces, while the hardness of steel increases； as normalized at 1 200 °C there is definite amount of residual austenite in matrix of steel led to a decrease of hardness of steel ； and as normalized temperature is higher than 1 100 °C the corrosion resistance of steel decreases easily to occur grain-boundary attack. Therefore, it is available to get higher hardness and better corrosion resistance by normalizing at 1 135 ℃.