The invention belongs to the technical field of electric power intelligent equipment, and particularly relates to a heat dissipation electric meter box. The electric meter box comprises a box body which comprises a left outer side baffle plate, a right outer side baffle plate, a top plate, a bottom plate, a front baffle plate and a rear baffle plate, and the inner sides of the two outer baffle plates are fixedly connected with the inner baffle plates through one or more connecting ribs vertically arranged. A cavity formed by outer side baffle plates of the connecting ribs and inner side baffleplate are divided into a plurality of air flow channels, of which the upper ends communicate with the inner space of the box body, and the lower ends are provided with a gas collecting shell. An exhaust fan and an air outlet are fixedly arranged in the air collecting shell, and an air inlet is formed in the bottom plate. According to the electric meter box, an air flowing mode of downward inlet and downward outlet is adopted, so that the functions of wind blocking and rainwater filling prevention are achieved. The whole air flow penetrates through the whole space in the box body from bottom to top, the rising buoyancy of hot air generated by the electric energy meter is fully utilized, and the flowing efficiency of air in the box body is improved.