Superfrequency office puts initiative noise tracking and restraines measurement system relates to the special high frequency signal's of a partial discharge collection system. The special high frequency signal of present partial discharge gathers and to compromise monitoring sensitivity and interference killing feature. This technical scheme includes input and output device that radio frequency merit that probe, input link to each other divides ware, input and radio frequency merit to divide the analog to digital conversion circuit that detection circuit that the ware output links to each other and mixer circuit, input link to each other, the treater that links to each other with analog to digital conversion circuit with detection circuit and mixer circuit output, link to each other with the treater with the probe output, analog to digital conversion circuit be equipped with double - circuit AD sampling chip and carry out analog -to -digital conversion with the signal to detection circuit and mixer circuit. This technical scheme combines together broadband detection monitoring and narrowband mixing monitoring, adopts local oscillator and first detector initiatively to trail interfering signal to restrain it, solve the contradiction between sensitivity and the interference killing feature.