Protection structure of DTU power distribution device

The invention relates to the technical field of power distribution equipment, in particular to a DTU power distribution device protection structure which comprises a protection box body, the protection box body is divided into an equipment chamber, a condensation chamber, a pipeline chamber and a ventilation chamber, a DTU power distribution cabinet body is placed in the equipment chamber, a main pipeline is erected in the pipeline chamber, the main pipeline is provided with an exhaust channel and an air inlet channel, and the air inlet channel is communicated with the condensation chamber. A sleeve is installed inside the middle side of the main pipeline and connected with a sliding sealing block, the sliding sealing block is connected with a connecting rod, the connecting rod is connected with a plugging head, the sleeve is connected with a vertical pipeline, the vertical pipeline is connected with a hopper-shaped cavity, the hopper-shaped cavity is provided with a floating barrel, and the floating barrel i