Transformer with good heat dissipation effect

The invention relates to the technical field of transformers, and discloses a transformer with a good heat dissipation effect, the transformer comprises a transformer body, the transformer body further comprises a heat dissipation device, the heat dissipation device comprises a heat dissipation structure and a detachable structure, and the heat dissipation structure comprises a finned radiator, a shell, an oil conveying pipe and a knob. The shell is fixedly connected to the outside of the transformer body, the finned radiator is arranged on the rear side of the shell, the oil conveying pipe is fixedly connected to the rear side of the shell, the rotary knob is hinged to the front side of the finned radiator, the reciprocating lead screw rotates to enable the hanging plate to move upwards to be separated from limitation of the limiting frame, and at the moment, the finned radiator is pulled to drive the hanging plate to move upwards. The finned radiator drives the inserting block to be pulled out of the insert