Vegetable planting greenhouse ventilation device

The utility model discloses a vegetable planting greenhouse ventilation device, which belongs to the technical field of ventilation devices and comprises a bottom plate, a water tank is mounted at the lower end of the bottom plate, a thermometer is mounted on one side of the bottom plate, a water pump is mounted at the upper end of the bottom plate, a mounting frame is mounted on the side edge of the bottom plate, and a nozzle mounting seat is mounted in the mounting frame. The water pump is fixedly connected with the spray head mounting seat through a connecting pipe, a supporting rod is mounted at the corner of the upper end of the bottom plate, a mounting plate is mounted at the upper end of the supporting rod, a fan is mounted at the upper end of the mounting plate, and a heating wire is mounted on one side of the fan. According to the assembly, the angle of the spray head mounting seat can be conveniently adjusted, so that the spray head mounting seat can spray a water source into a vegetable greenhouse