The invention relates to special damp-proof transmission equipment for the outside. The special damp-proof transmission equipment comprises a transformer, an oil conservator and a transformer protection bracket, wherein the transformer comprises a transformer box body, a transformer box cover, an iron core and a coil winding; the coil winding is wound on the iron core in a coating manner; the iron core and the coil winding are arranged in the transformer box body; the transformer box body is filled with transformer oil; transformer bases are fixedly arranged at the bottom part of the transformer box body; the transformer box cover is fastened to the transformer box body through fixed bolts; a protection mechanism is arranged between the transformer box cover and the transformer box body; a sealing gasket is arranged between the transformer box body and the transformer box cover; high-voltage outgoing line structures and low-voltage outgoing line structures are arranged on the transformer box cover; the transformer box body is provided with radiating sleeves; one high-voltage outgoing line of the transformer is connected with one corresponding high-voltage lead through one high-voltage connection structure; and one low-voltage outgoing line of the transformer is connected with one low-voltage lead through one corresponding low-voltage connection structure.