Pollination device used in watermelon planting process

The utility model provides a pollination device used in a watermelon planting process. The device comprises a glass bottle, a threaded cover, an air outlet pipe, a cover body, a pressure ventilation pipe and a rubber balloon, the threaded cover is mounted at the upper end of the glass bottle through a thread; the cover body is fixed to the middle of the upper end face of the threaded cover. A rubber balloon is mounted at the left end of the pressure ventilation pipe; the other end of the pressure ventilation pipe penetrates through the cover body and extends into the glass bottle; a hollow pipe is mounted on the upper end surface of the cover body; the air outlet pipe is mounted on the right side of the annular side surface of the cover body; the left end of the air outlet pipe extends into the cover body and is communicated with the hollow pipe; an inner pipe is inserted into the hollow pipe; a rubber rod is adhered to the upper side in the inner pipe through glue; the right side of the outer surface of the