The utility model relates to a wall bushing and use cubical switchboard of this wall bushing. The wall bushing, including the sleeve pipe body, the interior interval of sleeve pipe body is equipped with the high voltage shielding net and the low pressure shielding is netted, and high voltage shielding net, low pressure have at least one to net for the support arm shielding in shielding the net, and the support arm shielding is netted to net including the shielding and shield the electric conduction support arm of net location support on casting mold with the support arm when body is used for at wall bushing moulding by casting with the setting on shielding net body. When wall bushing moulding by casting, with the fixed electric conduction support arm of mould can with support arm shieldingnet location support on casting mold, required positioning die's simple structure, positioning die is complicated, forming technology is complicated, electric conduction support 0 is low when havingsolved the wall bushing moulding by casting who exists among the prior art problem.