The present invention discloses a grounding device and an automobile, relating to the technical field of grounding. The grounding device includes a grounding main body, a wiring terminal, a wire, a grounding fixing member and a grounding
pipe. The wire is connected to the wiring terminal, and the wiring terminal is connected to the grounding main body and is arranged in a fitting manner with the grounding main body. The grounding main body is provided with a fitting groove. The grounding fixing member is fixedly connected to the grounding
pipe. The grounding fixing member is provided with a convex platform, and the convex platform extends into the fitting groove and is arranged in a fitting manner with the inner wall of the fitting groove, so that the wire can be conducted with the grounding
pipe. Compared with the prior art, the grounding device provided by the present invention can increase the conduction contact area, is convenient to assemble, stable and reliable, consumes less energy during the conduction process, avoids interfering with the
control signal, and has strong practicability because it adopts a grounding main body connected to the wire through a wiring terminal and a mutually cooperating convex platform and fitting groove.