Unmanned aerial vehicle anti-freezing protection device

The invention relates to the technical field of unmanned aerial vehicle anti-freezing protection devices, and discloses an unmanned aerial vehicle anti-freezing protection device which comprises a containing box used for containing a battery and installed in a vehicle body, the containing box is provided with a battery bin, an annular cavity is formed between the containing box and the vehicle body, and a heating wire is further installed in the vehicle body. The heating wire is used for heating the interior of the annular cavity, a piston plate is further slidably connected to the interior of the containing box and used for stirring the interior of the annular cavity, a ventilation groove is formed in the piston plate, and a sliding block is slidably connected to the interior of the ventilation groove. A piston plate pushes air at the upper end of the piston plate to slide, so that the air at the upper end of the piston plate flows from one side of a placement box to the other side of the placement box, then