The invention relates to the technical field of transformers and in particular to a noise reduction structure of an amorphous oil-immersed transformer. The noise reduction structure includes a fillingmaterial, a cladding steel plate and bolts. The cladding steel plate coats the filling material and is fixed to the inner walls of the oil tanks on various sides of the transformer. The filling material is evenly squeezed in the cladding steel plate by the bolts. The noise reduction structure uses such a structural arrangement that the cladding steel plate coats the filling material and is fixedto the inner walls of the oil tanks on the respective sides of the transformer and the filling material is evenly squeezed in the cladding steel plate by the bolts, which is equivalent to installing asound-absorbing and vibration-reducing noise reduction structure with the filling material on the inner walls of the oil tanks, thereby effectively reducing the noise generated by the transformer. The noise reduction structure is simple in structure and process, low in cost, and good in practicability.