Small animal prevention device suitable for outdoor transformer substation

The small animal prevention device comprises a moisture-proof base, an electric appliance sub-packaging box and a storage box which are sequentially arranged in a stacked mode from bottom to top, and the storage box comprises a box body stacked on the electric appliance sub-packaging box and a hinged door rotationally installed at the end of the box body. A slope plate is rotatably mounted on the box body below the hinged door, a flashing board is detachably mounted on the box body above the hinged door, an alarm device is mounted in the electric appliance sub-packaging box, and a prevention and treatment medicine and/or a catcher for preventing small animals are/is placed in the box body. According to the method, reliable outdoor fixation of small animal prevention measures is taken as a starting point, small animals can be effectively prevented from invading an outdoor equipment area and entering a room, early inspection can be ensured after traces are found, power failure accidents caused by small animal e