Abstract: A test for the effect of stress-relieving annealing with unit stress 20 MPa and annealing speed 8. 0 ~ 15. 0 m/min at 250 ~400 Y on mechanical properties of 0. 12 mm strip cold-rolled from 1. 2 mm hot-rolled plate of stainless steel SUS301 (/% : 0. 13C, 0. 35Si, 1.63Mn, 0. 033P, 0. 002S, 16. 54Cr, 6. 27Ni, 0. 051N) has been carried out by continuous stress-relieving annealing furnace. Results show that before stress-relieving treatment the HV value, tensile, yield strength and elongation of 0. 12 mm cold-rolled strip of steel 301 are respectively 498,1 623 MPa, 1 498 MPa and 6.9% ； with raising annealing temperature, the strength and hardness of cold-rolled sheet of steel 301 increase while the elongation of steel decreases； at definite temperature with increasing annealing rate, the elongation of cold-rolled sheet of steel increases. As annealing at 400 °C with 8. 0 ~ 12. 5 m/min, owing to formation of martensite phase and dislocation migration the hardness HV value of cold-rolled sheet is up to N 525, and the tensile and yield strength are respectively 1 771.7 ~ 1790.0 MPa and 1 566.7 〜1 623. 3 MPa.