Abstract: Aiming at the problem that the high-frequency hysteresis loop and loss measurement of nanocrystalline materials are limited by the bandwidth and rated power of the instrument, a novel high-frequency measurement system is designed in this paper. The system adopts a DC power supply with a push-pull resonant inverter circuit to replace the traditional function signal generator and power amplifier, and adjusts the resonant frequency by adjusting the circuit components to achieve frequency adjustment in the 1 kHz-10 kHz band, which is featured with high transmission power, high efficiency, and continuously adjustable resonance frequency, etc. The PSCAD simulation software is utilized to study the various functions of the inverter circuit. A measurement system was developed and the hysteresis loop and loss curve of the nanocrystalline magnetic ring at 10 kHz were measured. By comparing the measurement system with the traditional measurement platform for small-capacity model measurement, it is found that the measurement error of the system is 3.3%, which proves that the proposed measurement system developed has high accuracy.