Aiming at the problems of low efficiency in measuring electrical parameters of rock and ore by frequency conversion method and narrow frequency band of existing special equipments, an experimental system for rapid measurement of broadband electrical parameters of rock and ore specimens based on Invert-Repeated m-Pesudo random Binary Sequence(IRmPRBS) is designed. The frequency distribution characteristics of pseudo-random coded signals and multi-frequency data processing methods are used to achieve broadband rapid measurement. The impedance measurement accuracy of this system was verified by comparison with the resistance-capacitance (RC) model measurement results from a Zurich MFIA impedance analyzer. Furthermore, cylindrical specimens were self-made using materials such as cement, tailings sand, graphite, and copper particles. Experiments on measuring the complex resistivity of these specimens were conducted, and the differences in complex resistivity characteristics between dry specimens and specimens treated with water immersion were discussed. The results show that: The effective frequency band range of the system covers 1 mHz to 110 kHz; The impedance measurement results of the RC model are accurate and reliable; when a 5th-order signal is used, the measurement efficiency is 2.3 times that of the frequency conversion method, and the measurement efficiency can be further improved by adjusting signal parameters; The multiple measurement results of the self-made specimens show good consistency; the magnitude of complex resistivity of the specimens before and after water immersion differs by dozens of times, and the extreme point of the phase curve of the water-immersed specimens shifts to the right; Among the measured specimens, the graphite specimen exhibits the most obvious polarization phenomenon, followed by the silicon particle specimen, which also shows a distinct double-peak feature in its phase curve. This system provides a wide-band and rapid measurement method as well as technical support for the measurement of electrical parameters of rock and mineral specimens.