The utility model relates to a movable-type reverse mirror-image method semi-iron core magnetic leakage experiment apparatus and belongs to the technology field of electromagnetic-field engineering technology application devices. The technical scheme is that the semi-iron core magnetic leakage experiment apparatus includes a sample support (1), a movable iron-core support (2), a fixed iron-core support (3), a track base plate (4) and two iron-core and coil integrated structures (5), wherein the sample support (1) and the movable iron-core support (2) are movably arranged on the track base plate (4) and the two iron-core and coil integrated structures (5) are respectively mounted on the movable iron-core support (2) and the fixed iron-core support (3). The beneficial effects of the experiment apparatus are that through a double iron-core reverse mirror-image method, sample loss is separated; the magnetic leakage experiment apparatus is beneficial to research electromagnetic and loss performance of different types of magnetic conductive materials and combination structures thereof; through adoption of the movable iron-core and coil integrated structure and the movable iron-core support, conversion of non-load and load experiments is convenient to realize, time and labor are saved; and structural parts are horizontally disposed and are convenient to adjust in terms of position.