Detection method and device against power conduction electromagnetic leakage

The invention discloses a detection method against power conduction electromagnetic leakage. The method comprises that a conduction electromagnetic leakage red signal source generates an electromagnetic leakage red signal for simulating a conduction electromagnetic leakage signal, and the electromagnetic leakage red signal is coupled to a power line of the signal source; and a leakage signal detector receives and analyzes the signal in the reception end. The invention also discloses a detection device against power conduction electromagnetic leakage. The detection device comprises the conduction electromagnetic leakage red signal source and the leakage signal detector; the conduction electromagnetic leakage red signal source generates the electromagnetic leakage red signal for simulating the conduction electromagnetic leakage signal and couples the electromagnetic leakage red signal to the power line of the signal source; and the leakage signal detector receives and analyzes the signalin the reception end. Thus, the conduction leakage protection capability of equipment and system can be detected rapidly, and weak points can be located.