Electronic load testing system

An electronic load testing system, providing a measured high-power switching power supply with a load current with high dynamic performance, and comprising:

• a testing cable, wherein a proximal end of the testing cable is connected to the switching power supply;
• a first electronic load, wherein the first electronic load is provided at a distal end of the testing cable and the testing cable is provided between the first electronic load and the switching power supply;
• a second electronic load, wherein the second electronic load is provided at the proximal end of the testing cable, is close to the switching power supply or is directly provided at an output terminal of the switching power supply;
• and
• a control module, wherein the control module is respectively connected to the first electronic load and the second electronic load and inputs a first input signal and a second input signal set in a correlated manner, and the first electronic load and the second electronic load respectively output a first current and a second current to the switching power supply, so that a change of a total load current is kept consistent with a change of the first input signal;
• wherein, a rate of change of the second current is higher than a rate of change of the first current.