The present invention discloses a system and method for measurement of a circuit network. The method comprises: outputting baseband emission signals satisfying preset period waveform features; emitting the baseband emission signals after modulation into a circuit network to be measured; employing the period waveform features to perform demodulation of signals in the circuit network to be measuredto obtain baseband receiving signals; employing the period waveform features of the baseband emission signals, and measuring and eliminating a time offset and a frequency offset of the baseband receiving signals; and performing signal matching of the baseband receiving signals after eliminating the time offset and the frequency offset with pre-generated reference signals to measure the non-linearfunction of the circuit network, wherein the reference signals are generated in advance based on a baseband receiving signal frequency f'a and the period waveform features of the baseband receiving signals. The system and method for measurement of a circuit network effectively reduce improvement of hardware of a current test instrument by employing a current measurement system and effectively improve the measurement speed.