Power supply box plastic shell convenient to disassemble and assemble

The utility model relates to a power box plastic housing convenient to disassemble and assemble. The power box plastic housing comprises a base; the storage box body is detachably connected with the base; the storage box body comprises a bearing seat and a cover plate mounted at the top end of the bearing seat; a first accommodating cavity is formed in the top end of the bearing seat; a second accommodating cavity is formed in the bottom end of the bearing seat; the cover plate is used for covering the first accommodating cavity; the inner walls of the two opposite sides, corresponding to the second accommodating cavity, of the bearing seat are respectively and convexly provided with a lug boss; the heat dissipation cover covers the bottom end of the storage box body; the heat dissipation cover is used for being inserted into the second containing cavity. The heat dissipation cover comprises a ventilation plate and side plates connected to the two opposite sides of the ventilation plate. And guide grooves are