The invention discloses an electronic equipment detection device based on semiconductor component detection. The electronic equipment detection device is characterized by comprising a power supply module, a transmitting module, a receiving module, an alarm module and a control module; and the power supply module are respectively connected with the modules needing other power supply, and the transmitting module, the receiving module and the alarm module are separately connected with the control module. The electronic equipment detection device based on the semiconductor component detection is a specific application of a harmonic radar technology, a S-waveband high-frequency fundamental wave (2.45-3.6GHz) is transmitted to a target area or a target object through a transmitting end of a harmonic radar, secondary harmonic (7-7.5GHz) and third harmonic (10-10.6GHz) which are generated by the target object are captured by a receiving end, and, after analysis and processing are carried out, a harmonic change rule before and after emission of a fundamental wave is given, so electronic equipment with a non-linear node can be effectively identified.