The present invention relates to a lightning protection and grounding device for a vehicle including: a dipole lightning rod mounted on the vehicle to in advance remove the focusing of an electric field of a lightning strike and to induce the discharge of lightning current when the lightning strike is induced thereto; grounding means disposed on earth to allow the lightning current of the lightning strike induced to the dipole lightning rod to flow to the earth, the ground means being formed of a flat plate disposed behind the rear wheels of the vehicle in such a manner as to be fixed compressedly to earth by means of the driving pressure of the rear wheels; and a connection terminal box adapted to connect the dipole lightning rod and the grounding means with each other.