The utility model provides a rain -proof power switch cabinet, relates to power switch cabinet field, for the heat dissipation of solving current power switch cabinet, the poor problem of rain -proofeffect. The top of cubical switchboard box is equipped with triangle -shaped weather enclosure, triangle -shaped weather enclosure's bottom slope, and by outwards extending one section circular arc portion in the bottom, and the lower of triangle -shaped weather enclosure bottom and the row water pipe connected of vertical setting, circular arc portion least significant end is equipped with the weather shield, be equipped with exhaust device in the cubical switchboard box, exhaust device's air exit is relative with the dust screen that cubical switchboard box lateral wall set up, and the outside top of dust screen is equipped with sectorial rain -proof cover. The intelligent power grid dispatching data remote on -line diagnosis analyzing device is suitable for the power system.