Outdoor prefabricated substation

The utility model discloses an outdoor prefabricated substation, which comprises a box body, a bottom plate, a top cover and heat dissipation holes, the box body is provided with a first box door through an open-close hinge, the front side of the box body is provided with a second box door through an open-close hinge, the front side of the box body is provided with a third box door through an open-close hinge, the bottom of the box body is provided with the bottom plate, and the top cover is provided with a heat dissipation hole. Four groups of ground nails are mounted at the bottom of the bottom plate, and a top cover is mounted at the top of the box body. When the transformer, the low-voltage switch cabinet and the high-voltage switch cabinet operate, friction is generated on the surrounding air, the air vibrates and impacts the inner wall of the box body to generate noise, the sound absorption layer is made of polyethylene materials, and when the multiple air guide holes are formed in the surface of the so