<p>Provided is an electromagnetic wave visualization device whereby it is possible to visualize in realtime a plurality of electromagnetic noise emission sources in both far fields and near fields. An electromagnetic wave visualization device comprises: a sensor which senses electromagnetic waves and outputs a sensing signal of a strength corresponding to the size of the energy of the sensed electromagnetic waves; a variable resistor which is connected to the sensor; and a resistance adjustment unit which adjusts the resistance value of the variable resistor which is connected to the sensor. The resistance value of the variable resistor is adjusted with the adjustment unit and an electromagnetic wave visualization measurement carried out.</p>
