Ventilation and dehumidification box body for generator set

The utility model relates to a ventilating and dehumidifying box body for a generator set, which comprises a generator set box body, a partition shutter, a generator device and a ventilating window, the partition shutter is arranged in the generator set box body and divides the inside of the generator set box body into an engine cavity and a heat dissipation cavity, and the heat dissipation cavity is arranged in the generator set box body. The ventilation window is installed on the rear portion of a box body of the generator set, the ventilation window enables the heat dissipation cavity to be communicated with the outside, the ventilation window can be conveniently set to be in a long-time opening state through the effect of the partition shutter, and therefore when the generator set does not work, the heat dissipation cavity is normally communicated with the outside, and an engine cavity is closed. According to the generator set, stable heat dissipation can be achieved when the generator set works, parts in