The electromagnetic compatibility (EMC) issues arising from the development of semiconductor switching devices and power electronics technology are becoming increasingly prominent. The course Electromagnetic Compatibility serves as an excellent vehicle for cultivating student abilities to solve complex engineering problems and to understand and evaluate the impact of engineering practices on society and the environment. However, the content of the EMC course is abstract, requiring complementary experiments to achieve effective teaching outcomes. Currently, there is a severe lack of dedicated experimental teaching platforms for this course. To address this situation, this paper designs an experimental platform based on a flyback switching power supply. Enabling experiments in differential-mode/common-mode interference analysis, analysis of electromagnetic interference (EMI) under varying loads, and EMI filter design, this platform adequately meets the experimental requirements for the Electromagnetic Compatibility course in electrical and electronic engineering programs.