LCR impedance measuring device and measuring method thereof

The invention relates to the technical field of impedance measurement, in particular to an LCR impedance measurement device and method, and the device comprises a signal source generation module, an MCU module, an A/D conversion module, a phase discriminator module, a first amplification module, an I/V conversion module, a range switching module, a second amplification module and a display module. The output end of the signal source generation module and one end of the first amplification module are both connected with one end of the measured element, the range switching module, the other end of the measured element and one end of the second amplification module are all connected with the I/V conversion module, and the first input end is connected with the other end of the first amplification module. The second input end is connected with the other end of the second amplification module, the output end of the phase discriminator module is connected with one end of the A/D conversion module, and the other end