The utility model relates to an electric power distribution equipment's transformer technical field easily wets and the prevent box transformer of condensation that provides to current outdoor box transformer. Including the transformer body and the box transformer box body, box lower extreme base pass through the stand and support, the stand be concrete structure, fixed connection between stand and the base, and the bottom half belongs to the plane bottom and be higher than the setting of place ground, still includes the curb plate, the curb plate is located between the adjacent coexistence post, the stand and all around the curb plate constituted the prefabricated space of box below, the space top is box transformer box physically, vertical both sides curb plate in the prefabricated space in box below sets up aeration grid, is equipped with the air -blower in prefabricated space, and the air -blower is located the aeration grid inboard. The utility model relates to a rationally, the condensation that can make the bottom half form drips fast, can not lead to the fact the water droplet deposit. Go to the bottom at the box that the top -coat covers that waterproof combined material can increase that its is waterproof, corrosion resistance and life.