The utility model provides a novel intelligent ammeter, includes the casing, locates the wiring part in the casing, and the casing includes inferior valve, epitheca, and the length of inferior valve is greater than the length of epitheca, and inferior valve and epitheca all are long cubic, and epitheca and inferior valve are to closing the after -fixing, and the rear end of inferior valve flusheswith the rear end of epitheca, and wiring part locates the interior the place ahead that just is located the epitheca of inferior valve, and wiring part's top is still covered and is equipped with theface guard, the front portion of the inside wall of inferior valve is equipped with interior convex part, is equipped with the buckle on the interior convex part, and wiring part's both sides are equipped with the draw -in groove, and the buckle is detained in the draw -in groove, be equipped with outside concave outer concave part on the inside wall of the inferior valve in interior convex partthe place ahead, form the heat dissipation space between outer concave part and the wiring part, seted up the louvre on the bottom surface in the space of should dispelling the heat. The utility modeldiscloses design heat dissipation space on the inferior valve for the heat that wiring part produced can distribute away through the space of dispelling the heat fast.