The invention provides a replacement device special for a 35kV mutual inductor. The replacement device is detachably fixed to a dual box iron support where the mutual inductor is located and comprisesa first base, a second base, a first vertical rod, a second vertical rod and a first transverse rod. The first base comprises a bottom plate and a supporting rod perpendicular to the bottom plate. The second base is detachably connected with the bottom plate. The dual box iron support is movably connected between the supporting rod and the second base in a clamped manner. The first vertical rod is detachably connected to the surface of the bottom plate. The second vertical rod is detachably connected to the end of the first vertical rod in a clamped manner. The first transverse rod is movablyconnected to the end, away from the first vertical rod, of the second vertical rod. A hoisting mechanism capable of ascending and descending is arranged on the first transverse rod and can draw the mutual inductor to do lifting movement. The replacement device has the beneficial effects that dual box iron where the mutual inductor is fixed is connected between the first base and the second base in the clamped manner, the special replacement device is fixed, the hoisting mechanism hooks the mutual inductor, and the mutual inductor is replaced and moved conveniently, fast and safely.