Abstract: A magnetization method using superimposed high-and low-frequency magnetic field was proposed to simultaneously achieve elasto-magnetic tensile stress measurement and ultrasonic guided waves inspection in steel strands. Two versions of experimental set-ups were constructed based on two types of amplifiers. In the experimental set-up using KH7500 amplifier, the high frequency component of the output signal of the integrated sensor represented magnetostrictive-based ultrasonic guided waves, and the low frequency component carried the information of minor hysteresis loop. In the experimental set-up using BMP-360T amplifier, the sensor employed two individual sensing coils to detect the signals of minor hysteresis loop and ultrasonic guided waves, respectively. The experimental results obtained from the two versions of experimental set-ups show that there is a good linear relationship between the peak value of the low frequency induced voltage and the tensile stress. The research outcomes provide technique for simultaneously conducting elasto-magnetic tensile stress measurement and ultrasonic guided waves inspection in steel strands.