The invention relates to the field of electric power system matching equipment and provides a novel electric power metering box which is exquisite in structure, good in use effect, capable of being rainproof and waterproof and dustproof effectively and meanwhile, good in ventilation effect. The novel electric power metering box comprises a metering device, a box body and a box door. The metering device is fixedly connected in the box body; the box door is movably connected to the box body; the box door is uniformly provided with a plurality of long-strip-shaped ventilation holes; the end face, facing to the metering device, at one side of the box door is provided with a plurality of waterproof assemblies in one-to-one correspondence with the ventilation holes; and each waterproof assembly comprises a top plate, a vertical plate and an inclined plate. The novel electric power metering box has good ventilation and heat radiation effect, can play a waterproof and rainproof effect effectively, and meanwhile, realizes an effect of fast flow discharge and no water stain residual.