The invention provides noise reduction equipment for a transformer. The noise reduction equipment for the transformer comprises a cover, a noise reduction material and the transformer, wherein the noise reduction material is arranged on the outer wall surface and/or the inner wall surface of the cover; and the cover covers the transformer. Because the cover covers the transformer and is provided with the noise reduction material, the noise reduction material absorbs noises, the noises generated by the transformer can be reduced effectively and are stored in the cover, noise transmission is avoided effectively, the working mute property of the transformer is improved, and noise pollution is reduced. Moreover, the noise reduction equipment for the transformer has the advantages of simple structure, convenience in operation and low manufacturing cost.