The present invention provides a superconducting cable AC loss compensation measuring device which comprises a shielding box and compensation components. The compensation components comprise an upper end plate, a lower end plate, a fixed bracket, a guide rail, a guide rail fixed backplate, a lateral guide rod, a linear motor, a linear motor connection piece, a primary coil, and a secondary coil. The compensation components are placed in the shielding box. The primary coil is arranged on the epoxy base of the lower end plate and is connected to an external circuit through two wire connection ports. The secondary coil is fixed to the linear motor connection piece through the lateral guide rod. A motor driving mechanism is used to control the linear motor connection piece to move up and down along the guide rail, and the secondary coil is controlled to vertically move up and down at the center of the primary coil. According to the device, through the series connection of the primary coil capable of bearing thousands of amps in a circuit and through adjusting the reverse induced voltage generated by the mutual inductance of the primary coil and the secondary coil to offset the inductive voltage component on a superconducting cable, the superconducting cable resistance voltage component is measured, and an alternating current loss is obtained.