The utility model discloses a voltage transformer transformation ratio test clamp. The voltage transformer transformation ratio test clamp comprises two test clamp feet which are hinged to each other,one end of each test clamp foot is a test head, the other end of each test clamp foot is an insulating handle, a clamping head which is parallel to the insulating handle in direction and protrudes out of the test head is arranged on the test head, and a plurality of insections consistent with the inner wall in direction are arranged on the inner wall of the clamping head. The clamping head is made of conductive metal and is electrically connected with the wire through a test clamp pin. The beneficial effects of the utility model are that: the utility model discloses: the beneficial effect is:The utility model discloses a voltage transformer transformation ratio test clamp. The overall clamping direction of the test clamp is changed by changing the guide direction of the clamping head; the clamp saves clamping space, facilitates clamping operation of the test clamp in the test process, improves work efficiency, ensures that whether the number of turns of the coil and the tapping position of the voltage transformer are correct or not is effectively checked, and is convenient to use, short in consumed time and high in work efficiency in the transformation ratio test process of the voltage transformer.