Abstract: A new approach is proposed to analyze the tested high-frequency storage modulus and loss factor of polyphenylene sulfide by using the measured resonance frequency and quality factor of the polyphenylene sulfide-based Langevin transducer. The test results show that the relative errors of the high-frequency mechanical parameters measured by the dynamic viscoelastic analysis method are the smallest when used in the design of the transducer, followed by the modified piezoelectric ultrasonic composite oscillator technique. The resonance method and the wave velocity method have comparatively more relative errors. The method of analyzing the measurements of mechanical parameters proposed in this paper is not limited by the measurement frequency range, and provides a new inspection approach for the high-frequency mechanical parameters.