Abstract: Traditionally, clamp-on current probes have been primarily utilized for frequency-domain measurements. In recent years, their time-domain testing applications have gained significant attention due to their large aperture and broad frequency range advantages. However, the transmission impedance of clamp-on current probes cannot maintain consistency or linear variation across different frequencies, necessitating the correction of the voltage signals obtained during measurement to convert them into the actual current time-domain waveforms. This article delves into the technology for reconstructing discrete signal sequences from amplitude or phase data, analyzing the process of reconstructing time-domain information from transfer functions and the principles of the minimum phase method. It presents a method for restoring the time-domain test signals of current probes. The amplitude-frequency and phase-frequency transfer characteristic curves of the current probes are obtained, and the restoration effects of the minimum phase method and actual measurement method are verified and compared under irregular vibration signals and morlet wavelet signals. The article also compares the impact of different directional phase input signals on the restoration effect, noting that a discrepancy between the probe′s calibration direction and the measurement direction can lead to a phase inversion in the restored signal using the actual measurement method.