The AC Loss Testing Platform is a precision test system designed to measure energy losses in superconducting materials, magnetic materials, and power electronic devices under alternating electromagnetic fields. Under actual operating conditions, AC loss appears as heat generation, which can adversely affect the performance of materials and the overall structure. Therefore, AC loss testing is essential, and AC loss parameters provide data support for magnet design and simulation calculations. This product uses the electrical measurement method, measuring transport current, terminal voltage, and their phase difference, to test the AC loss of superconducting tapes, cables, and coils. By applying AC current with different frequencies and amplitudes to the sample through the AC power supply system, the total loss power under the operating condition can be obtained directly. The platform integrates the required equipment into a single system, enabling program-controlled one-click testing.